Certificate of Analysis Library
Every batch we ship is tested by a third-party accredited laboratory. HPLC purity chromatogram + mass spectrometry identity confirmation are recorded against the batch number on the vial in your hand.
What's in every Certificate of Analysis
- Compound identity — name, molecular formula, average mass, and (where applicable) CAS number
- HPLC purity chromatogram — reverse-phase HPLC result with the trace, ≥99% specification
- Mass spectrometry confirmation — ESI or MALDI-TOF identity match against the expected mass
- Batch and manufacture data — batch or lot number, manufacture date, appearance, and (where applicable) Karl Fischer water content and residual solvent screening
- Third-party accreditation — issued by an independent analytical laboratory, not by us
Request a COA
While we finish building the fully-searchable batch library, COAs are available on request within one business day. Email us the batch number printed on your vial label, or the product name if you're evaluating a compound before ordering.
Email compliance@prpeps.comWe reply within one business day. Existing customers can also request COAs by replying to any order confirmation.
Why a COA matters
A Certificate of Analysis is the primary trust document in the research peptide market. It confirms that what shipped matches what was ordered, that purity clears the ≥99% threshold expected for in vitro research work, and that an independent laboratory has verified both the identity and the analytical specification.
The batch number printed on the vial ties directly to the COA on file — any reviewer, institutional purchasing agent, or QA auditor can pull the exact analytical file for the material in hand.
Research Use Only. All Premier Research products are supplied strictly for in vitro laboratory investigation. Not intended for human or veterinary consumption, therapeutic use, dietary supplementation, or clinical application. Not FDA-approved.