Notes onchemical sourcing.

A closer look at the decisions behind chemical supply. Practical guidance on manufacturers, material quality and the route from inquiry to delivery.

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From the sourcing desk

Last updatedSeptember 6, 2026

FEATURED FIELD NOTE

Pharmaceutical Intermediates: Identity, Impurity Control and Supplier Qualification

A technical review connecting molecular identity, impurity assessment, analytical comparability and supplier evidence to pharmaceutical intermediate purchasing decisions.

September 6, 202615 min read

Pharmaceutical IntermediatesImpurity ControlSupplier QualificationAnalytical ComparabilityQuality Risk Management

READ NOTE

FIELD NOTE

How to source pharmaceutical intermediates from China

A practical sourcing guide with an adaptable RFQ, a 100 kg quotation comparison, receiving and release decisions, and a 90-day qualification plan.

July 12, 202621 min read

Pharmaceutical IntermediatesChina SourcingSupplier QualificationQuality DocumentationLogistics

READ NOTE

A PRACTICAL READING PATH

Follow the decisions.

Start with the requirement, examine the evidence, then plan how the material reaches its destination.

Define the material

Turn a CAS number into a specification, sample plan and comparable RFQ.

Review the evidence

Understand what the COA, analytical methods and representative samples establish.

Plan the delivery

Connect packaging, documents, transport responsibilities and release decisions.

YOUR NEXT REQUIREMENT

Put the guidance to work.

Discuss a sourcing requirement