Route development is a major cost driver.
The selected number of steps and molecular complexity indicate meaningful route-development and optimisation work.
Chemical Custom Synthesis Cost Calculator
Estimate the Preliminary Investment for Your Custom Synthesis Project
How much does chemical custom synthesis cost?
There is no meaningful universal price per gram for a customer-specific molecule. The investment required depends on the scientific challenge, the requested material, quality expectations, project scale and the work required to turn a molecular target into a reproducible and characterized product.
The ChiroBlock Chemical Custom Synthesis Cost Calculator provides a structured preliminary investment range for early project planning.
You receive three planning values:
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Estimated Minimum Investment
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Estimated Typical Investment
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Estimated Maximum Investment
The Typical Investment is the primary reference value for preliminary budgeting.
The result is a planning estimate, not a binding quotation. A formal proposal requires an individual scientific feasibility review of the actual target molecule and project requirements.
Chemical Custom Synthesis Cost Calculator
Estimate Your Custom Synthesis Project
Get a preliminary minimum, typical and maximum investment range based on the key requirements of your custom synthesis project.
Preliminary estimate - Confidential - No obligation
The result is a non-binding planning estimate. A formal quotation requires an individual scientific feasibility review.
25+ years of synthesis experience · ISO 9001 · mg-to-kg capabilities · NDA and IP protection · Fee-for-Result options
Calculate Your Preliminary Custom Synthesis Investment
Describe your project using a short set of scientific, technical and operational requirements.
The calculator evaluates the information you provide and generates a preliminary investment range designed to support:
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early-stage budgeting
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internal project approval
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procurement preparation
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project comparison
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make-or-buy discussions
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supplier evaluation
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preparation for a formal synthesis request
The calculated values are non-binding preliminary planning estimates. A formal quotation requires a molecule-specific scientific feasibility review.
Chemical Custom Synthesis Cost Calculator at a Glance
| Purpose | Preliminary budgeting for chemical custom synthesis projects |
| Output | Minimum, Typical and Maximum Investment |
| Primary planning value | Typical Investment |
| Project scope | Research compounds, customer-specific molecules and recurring supply |
| Scale | Research quantities through kilogram-scale supply |
| Typical users | Pharma, biotech, diagnostics, materials science, industrial R&D, academia and procurement |
| Result type | Preliminary and non-binding |
| Formal quotation | Scientific feasibility assessment required |
| Provider | ChiroBlock GmbH, Germany |
What Does the Estimated Investment Range Mean?
The calculator provides a range because chemical synthesis projects contain scientific and operational uncertainty that cannot be represented responsibly by one fixed number before the target molecule has been reviewed.
Estimated Minimum Investment
The minimum value represents a comparatively favourable project scenario.
It provides a lower planning reference for a project in which the chemistry, purification, analytical work and project execution proceed without major additional challenges.
Estimated Typical Investment
The Typical Investment represents the most realistic preliminary planning value based on the project information provided.
Use this value for:
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preliminary budgets
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internal approvals
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procurement planning
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project comparisons
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early investment discussions
For most users, the Typical Investment should be regarded as the primary budgeting reference.
Estimated Maximum Investment
The maximum value provides an upper planning reference for a technically more demanding project scenario.
Additional scientific work may become necessary when, for example, a route requires adaptation, purification proves more difficult than expected or additional analytical or process work is required.
None of these values constitutes a binding quotation.
What Is a Chemical Custom Synthesis Cost Calculator?
A Chemical Custom Synthesis Cost Calculator is a project-planning tool used to estimate the preliminary investment required for the synthesis of a customer-specific or commercially unavailable compound.
Unlike a catalogue-product calculator, it cannot simply multiply a requested amount by a price per gram.
Custom synthesis may involve:
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literature and patent evaluation
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retrosynthetic planning
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route scouting
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reaction development
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synthesis of unavailable intermediates
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purification development
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analytical characterization
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scale-up
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process optimization
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quality documentation
The calculator therefore provides an initial planning framework before the actual molecule undergoes scientific evaluation.
It complements — but does not replace — the work of experienced synthetic chemists.
What Influences the Cost of Chemical Custom Synthesis?
The investment required for custom synthesis depends on the interaction of molecular complexity, route development, requested quantity, purity, timeline, analytical work, quality requirements and scale.
No single parameter determines the final project investment.
Molecule Novelty and Synthetic Complexity
A known compound with an established synthesis route generally represents a different technical challenge from a completely novel structure or first-time synthesis.
For less established molecules, chemists may need to:
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evaluate literature and patent information
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identify suitable starting materials
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develop alternative retrosynthetic approaches
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perform exploratory experiments
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optimize reaction conditions
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develop purification methods
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redesign unsuccessful route sections
Scientific uncertainty is therefore an important part of early project assessment.
Number and Difficulty of Synthetic Transformations
Longer routes often require more laboratory work, but the nominal number of synthesis steps alone does not define project difficulty.
Two routes with a similar number of transformations can differ substantially in:
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reaction robustness
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starting-material availability
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intermediate stability
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purification requirements
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cumulative yield
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safety
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scalability
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analytical complexity
The underlying chemical challenge matters more than step count alone.
Required Quantity and Scale
Quantity influences project investment, but the relationship is not linear.
At small scale, scientific development, chemist time, purification and analytical characterization may dominate the project.
At larger scale, additional considerations become increasingly important:
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raw-material demand
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equipment capacity
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process safety
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heat and mass transfer
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work-up volumes
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scalable purification
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waste generation
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reproducibility
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batch consistency
This is why custom synthesis cannot normally be reduced to a simple price-per-gram calculation.
Purity and Product Specification
Higher purity requirements may increase project effort when closely related impurities, side products or residual starting materials are difficult to remove.
Depending on the chemistry, achieving a demanding specification may require:
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additional purification
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repeated crystallisation
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chromatography
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optimization of work-up conditions
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additional analytical characterization
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further synthesis to compensate for purification losses
The impact of purity therefore depends strongly on the individual molecule.
Delivery Requirements
A flexible project schedule allows laboratory work, sourcing, purification and analysis to be organized efficiently.
Projects with an important or accelerated delivery requirement may require:
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priority sourcing
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dedicated laboratory capacity
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parallel experimental work
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accelerated analytical turnaround
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additional project coordination
For exploratory synthesis, however, chemistry imposes technical limits on how far a project timeline can be compressed.
Quality and Documentation Requirements
Different applications require different levels of documentation, traceability, analytical evidence and quality review.
Requirements may depend on whether the material is intended for:
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exploratory research
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pharmaceutical or biotechnology development
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diagnostics
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analytical use
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process development
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materials science
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industrial R&D
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recurring supply
The final documentation and quality scope is defined individually for each project.
Why Custom Synthesis Cannot Be Priced Like a Catalogue Chemical
Catalogue chemicals and custom-synthesized compounds follow fundamentally different economic models.
A catalogue product normally has:
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an established synthesis route
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existing analytical methods
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known raw materials
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historical production experience
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multiple customers
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repeated manufacturing campaigns
Development and manufacturing costs can therefore be distributed across many batches and buyers.
A custom synthesis project may instead involve a molecule that:
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is not commercially available
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has never been synthesized before
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exists only as a molecular concept
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requires a customer-specific specification
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has no scalable published route
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needs confidential development
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is required by only one customer
The project investment therefore reflects not only the material delivered, but also the scientific work required to make that material possible.
Purification Can Be a Major Project Driver
Purification is often one of the most underestimated aspects of custom synthesis.
A reaction does not automatically produce a directly usable product.
Depending on the chemistry, purification may involve:
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crystallisation or recrystallisation
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extraction
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precipitation
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filtration
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distillation
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flash chromatography
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preparative chromatography
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repeated isolation procedures
A synthesis route with robust crystallisation steps can behave very differently from a route that repeatedly requires difficult chromatographic separations.
Purification can affect:
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achievable purity
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isolated yield
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material recovery
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scale-up feasibility
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project duration
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analytical workload
For this reason, the actual target structure remains essential for a formal assessment.
What the Calculator Can Tell You
The calculator is designed to support decisions before a full scientific quotation is available.
It can help with:
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preliminary project budgeting
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internal investment approval
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procurement planning
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comparison of alternative project requirements
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early project qualification
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assessment of budget feasibility
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preparation for discussions with a chemical CRO
It is particularly useful when you need a realistic order of magnitude before committing resources to a detailed supplier evaluation.
What the Calculator Cannot Determine
An automated calculator cannot predict experimental chemistry.
It cannot determine with certainty:
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whether a proposed reaction will work
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whether a literature route is reproducible
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which side products will form
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the stability of unknown intermediates
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the achievable yield of an unexplored reaction
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the best purification strategy
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the exact availability and price of every starting material
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scale-up behaviour
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molecule-specific process hazards
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unexpected analytical challenges
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intellectual-property restrictions
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the final binding project price
These questions require scientific evaluation and, in many cases, laboratory experiments.
Can the Calculator Be Used for a Novel Molecule?
Yes. The calculator can provide a preliminary planning range for a novel or previously unavailable molecule, but it cannot determine whether the synthesis will ultimately be feasible.
Novel molecules are precisely the type of project for which early budgeting is difficult.
A first estimate can therefore be useful for:
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research planning
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grant or internal budget preparation
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project prioritization
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procurement discussions
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evaluation of outsourcing options
The formal project assessment begins when ChiroBlock receives the target structure and relevant specifications.
Can the Calculator Be Used for Larger or Recurring Supply Projects?
Yes. The calculator can support preliminary planning for both one-time research projects and recurring supply requirements.
As projects move from research quantities toward larger-scale or repeated supply, the emphasis gradually shifts from exploratory synthesis toward:
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reproducibility
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process robustness
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raw-material strategy
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scalable purification
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process efficiency
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batch consistency
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supply reliability
Recurring supply may therefore require a different technical strategy from a one-time synthesis.
Explore the Main Cost Drivers in Chemical Custom Synthesis
The monetary estimate above can be complemented by the interactive Cost Driver Explorer.
It illustrates how changing project requirements can influence relative project complexity and laboratory effort.
The Explorer is an educational planning tool. It does not reproduce ChiroBlock's quotation process and does not calculate a second binding price.
Select a factor or move a slider. The explanation updates immediately.
Each additional reaction step can add experimental work, isolation,
purification, analytical verification and cumulative yield loss.
The selected purity target may require dedicated purification
and analytical verification.
A target-specific feasibility review is required before a binding quotation.
Cost Pressure Index
41 / 100
Dominant Cost Driver
Molecule Complexity
Project Complexity
Moderate
Selected cost driver
Number of Synthesis Steps
Current setting
5 synthesis steps
Influence
Moderate
Factor score
38 / 100
Contribution to cost pressure
38%
With five steps, route efficiency and the yield of each transformation
already have a meaningful effect on final project effort.
Interactive project parameters
Adjust the Project
Core chemistry
1
15
Simple
Exceptional
80%
99.9%
Project delivery
50 mg
10 kg
Flexible
Critical
Quality and application scope
Basic
Comprehensive
Research
Highly regulated
What the Current Settings Suggest
Purification effort remains relevant.
Expert feasibility review remains essential.
Example Custom Synthesis Project Situations
Known Compound Required for R&D
A research team needs a commercially unavailable compound in a relatively small amount.
A useful route may already exist, but synthesis, purification and analytical confirmation are still required.
The project investment may therefore be determined more by laboratory effort than by the physical amount of material delivered.
Novel Molecule with Demanding Specification
A new molecular structure is required for a pharmaceutical, biotechnology, chemical biology or materials-science project.
No directly transferable route may exist.
The project may involve:
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route scouting
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exploratory chemistry
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purification development
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analytical characterization
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optimization of individual transformations
Uncertainty is naturally higher at the beginning of such a project.
Recurring Supply of a Customer-Specific Compound
A previously developed molecule is required repeatedly.
The focus may shift toward:
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process robustness
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reproducibility
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scalable purification
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supply-chain reliability
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consistent product quality
Initial development effort can therefore create value over multiple subsequent batches.
From Preliminary Estimate to Formal Quotation
Step 1: Generate a Preliminary Investment Range
Use the calculator to establish an initial budget based on the information currently available.
Step 2: Submit Your Target Molecule
For a scientific project evaluation, provide as much information as possible, for example:
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target structure or CAS number
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required quantity
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target purity
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intended application
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desired timeline
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available literature or patent information
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analytical requirements
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documentation expectations
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quality or regulatory requirements
Request a confidential project evaluation
Step 3: Scientific Feasibility Review
ChiroBlock's synthesis team evaluates the actual molecule and project requirements.
Depending on the project, this may include assessment of:
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route options
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literature information
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starting materials
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synthetic risk
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purification
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analytical requirements
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safety
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scalability
Step 4: Formal Project Proposal
The formal proposal defines the agreed project framework, including relevant aspects such as:
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project scope
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product specification
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commercial model
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expected timeline
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documentation
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delivery conditions
Learn what information is useful for a custom synthesis request
Fee-for-Result for Selected Custom Synthesis Projects
For suitable projects, ChiroBlock offers a Fee-for-Result contract model designed to reduce the customer's financial exposure to synthesis risk.
The applicable technical success criteria, commercial conditions and project scope are defined individually before the project begins.
Fee-for-Result is particularly relevant where both parties can establish a clear and objectively measurable project result.
Not every synthesis project is suitable for the same contractual model.
Learn more about custom synthesis costs and contract models
Who Is the Chemical Custom Synthesis Cost Calculator For?
The calculator is designed for professionals involved in chemical R&D, outsourcing, procurement and product development.
Typical users include:
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pharmaceutical companies
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biotechnology companies
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diagnostics developers
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medical-device companies
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advanced-materials developers
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specialty-chemical companies
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industrial R&D teams
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universities
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research institutes
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procurement specialists
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R&D managers
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project managers
Typical projects include:
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novel research compounds
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commercially unavailable molecules
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pharmaceutical intermediates
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impurities
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reference compounds
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analytical standards
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functional molecules
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specialty chemicals
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first-time syntheses
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route-development projects
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recurring supply
Why ChiroBlock for Chemical Custom Synthesis?
ChiroBlock GmbH is a specialized chemical CRO for complex, customer-specific and commercially unavailable molecules.
More Than 25 Years of Custom Synthesis Experience
ChiroBlock has supported chemical synthesis projects since 1999.
Its work ranges from exploratory synthesis and complex target molecules to process development and recurring supply.
From Milligrams to Kilograms
Projects can progress from initial research quantities through gram scale to kilo-lab and recurring kilogram-scale synthesis.
Explore ChiroBlock's synthesis laboratories
Route Scouting and Process Development
When an existing route is unsuitable, ChiroBlock can develop or redesign synthetic approaches with a focus on:
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feasibility
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robustness
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scalability
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purification
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reproducibility
Learn more about route scouting and process development
ISO 9001 Quality Management
ChiroBlock operates an ISO 9001-certified quality management system supporting customer-specific synthesis and supply projects.
Confidentiality and IP Protection
Projects can be handled under NDA or CDA.
Customer structures, project information and intellectual property are treated confidentially.
Focused on Custom Synthesis
ChiroBlock is not primarily a catalogue supplier.
The focus is on solving customer-specific chemical synthesis challenges and supplying compounds that are unavailable in the required form elsewhere.
Explore ChiroBlock's Chemical Custom Synthesis Service
Frequently Asked Questions
How much does chemical custom synthesis cost?
There is no universal price for chemical custom synthesis. Investment depends on the actual molecule, scientific uncertainty, synthesis effort, required quantity, purity, analytical work, timeline, scale and project-specific quality requirements.
The calculator provides a preliminary minimum, typical and maximum investment range for early budgeting.
Is the calculator result a quotation?
No.
The result is a non-binding preliminary planning estimate. A formal quotation requires evaluation of the actual molecular structure, specifications and technical feasibility.
Why does the calculator provide a range instead of one price?
Chemical development contains uncertainties that cannot be evaluated reliably from a few project parameters alone.
Providing a range is therefore more appropriate for early budgeting than presenting a single number as if it were already a formal price.
Which value should I use for budgeting?
The Typical Investment is the recommended primary planning value.
The minimum and maximum values provide additional context for more favourable or more demanding project scenarios.
Does quantity determine the cost of custom synthesis?
Not by itself.
At research scale, scientific development, purification and analytical work may contribute more to project investment than the physical amount of product.
At larger scale, raw materials, equipment, process development and scalable purification become increasingly important.
Does higher purity increase custom synthesis costs?
It can.
The impact depends on the target molecule and the impurities that must be separated. Higher purity requirements may require additional purification and analytical verification and can reduce the amount of isolated product.
Can the calculator estimate the cost of a molecule that has never been synthesized before?
It can provide a preliminary budgeting range.
It cannot determine experimental feasibility. A first-time synthesis may require literature research, route scouting and exploratory laboratory work before the actual scope is known.
Can I use the calculator for recurring supply?
Yes.
The calculator is suitable for preliminary planning of both individual synthesis projects and recurring supply requirements.
A formal recurring-supply proposal requires evaluation of the route, scale, reproducibility, specification and expected demand.
Can the calculator be used for projects with special quality requirements?
Yes, for preliminary planning.
The exact analytical, documentation, quality and regulatory scope must be reviewed separately before a formal project proposal is issued.
Why can the final quotation differ from the calculator result?
The calculator only evaluates information that can be captured in a standardized project assessment.
A scientific review may reveal additional factors such as:
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unexpected route complexity
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unavailable starting materials
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difficult purification
-
unstable intermediates
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unusual analytical requirements
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process-safety issues
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scale-up challenges
These factors can only be assessed after reviewing the actual project.
What information should I provide for a formal quotation?
Ideally provide:
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target molecular structure
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CAS number, if available
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required quantity
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required purity
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intended application
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desired timeline
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available literature or patents
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analytical requirements
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documentation requirements
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quality or regulatory expectations
The more relevant scientific information is available, the more efficiently the feasibility review can be performed.
Key Takeaways
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Chemical custom synthesis cannot normally be priced using a simple price-per-gram model.
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Molecular novelty, synthesis difficulty, purification, scale and project requirements influence the investment.
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The calculator provides a preliminary Minimum, Typical and Maximum Investment range.
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The Typical Investment is the recommended initial budgeting value.
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The calculator supports project planning but does not predict experimental success.
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A binding quotation requires scientific evaluation of the actual target molecule.
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ChiroBlock supports complex and commercially unavailable molecules from research scale to recurring kilogram-scale supply.
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Selected projects may qualify for a Fee-for-Result contract model.
Methodology and Scientific Review
The ChiroBlock Chemical Custom Synthesis Cost Calculator is designed as a preliminary project-planning tool.
It evaluates selected project characteristics using ChiroBlock's internal estimation model to provide an indicative investment range.
The calculator does not reproduce the scientific feasibility assessment or formal quotation process used for an actual synthesis project.
Internal weighting, commercial calculation logic and project-specific quotation methodology are not part of the public calculator documentation.
This separation is intentional: standardized project information can support early budgeting, while the actual molecular structure and chemistry must be evaluated individually by experienced synthetic chemists.
Scientific context and review: ChiroBlock GmbH synthetic chemistry team
Last reviewed: August 2026
Ready to Estimate Your Custom Synthesis Project?
Use the Chemical Custom Synthesis Cost Calculator to establish a preliminary investment range for your project.
The result can support:
-
budgeting
-
procurement planning
-
project approval
-
supplier discussions
-
early feasibility decisions
When you are ready to move forward, submit your molecule for a confidential scientific feasibility review.
Calculate Your Project Investment
Request a Confidential Feasibility Review
25+ years of synthesis experience · ISO 9001 · mg-to-kg capabilities · NDA and IP protection · Fee-for-Result options
Explore the Custom Synthesis Workflow
