How we source and verify each compound
Every batch supplied by BSR undergoes a defined verification process before dispatch.
Supplier qualification
We work exclusively with GMP-compliant synthesis facilities that operate under ISO 9001-certified quality management systems. Each supplier is assessed against our qualification criteria before onboarding, covering synthesis purity standards, analytical testing capabilities, and cold-chain logistics.
Analytical testing
Every batch is released against a certificate of analysis from the manufacturing laboratory, covering:
- HPLC purity analysis (specification not less than 98%)
- Mass spectrometry for identity and molecular weight
- Water content, residual solvents and heavy metals
- Bacterial endotoxins (LAL) and microbial limits
We are introducing independent verification of these results by a UK analytical laboratory. Batches carrying an independent report will say so on the product page; until then, the figures shown are the manufacturer's.
A certificate of analysis is issued with every order on request — it is sent to the purchaser rather than published, so that a certificate can always be matched to the batch it accompanies.
Batch traceability
Each product is assigned a unique batch code traceable from synthesis through to dispatch. The batch code printed on the vial label is the code on the certificate that accompanies it and on the product page at the time of purchase.
Research-use classification
All compounds supplied by BSR are classified strictly for in-vitro and preclinical research use. They are not intended for human or veterinary administration. Orders are fulfilled only to verified research institutions, laboratories, and registered researchers.
Quality non-conformance
In the event a batch fails our acceptance criteria, product is quarantined and not released for sale. Affected customers with outstanding orders are notified and offered either a replacement from the next qualifying batch or a full refund.