Purity claims mean nothing without proof. Every batch of every compound we supply is independently tested before it ships — not by us, by a certified third-party analytical laboratory.
High-Performance Liquid Chromatography with UV detection separates the peptide from synthesis byproducts, solvent residuals, and other impurities. The integrated peak area of the target compound is expressed as a percentage of total peak area. We require >99% purity before a batch is approved.
Electrospray ionization mass spectrometry (ESI-MS) confirms the molecular weight of the compound matches the theoretical mass of the target peptide. This rules out substitution, truncated sequences, or mis-labelled vials.
A COA is issued for every lot number, documenting: product name, lot number, test date, analytical method, purity result, and identity result. COAs are batch-specific — not a single document reused across orders. Every order ships with its own COA traceable to your lot number.
After quality approval, compounds are lyophilized (freeze-dried) to remove residual solvent and maximize shelf stability. Lyophilized peptides stored at -20 degrees C maintain bioactivity for years. Each vial is sealed under inert gas and foil-wrapped for light and moisture protection.
PASS
HPLC purity measures the percentage of the target peptide relative to all detectable compounds in the sample. A result of >99% means at least 99% of the material is the correct peptide. We reject any batch that falls below this threshold.
A COA is a batch-specific document from the analytical lab confirming identity and purity. It includes: product name, lot number, test date, analytical method, purity percentage, and identity confirmation via mass spectrometry. Every lot we sell has its own COA.
Yes — all testing is performed by an ISO/IEC 17025 accredited third-party laboratory. ISO/IEC 17025 is the international standard for testing laboratory competence. Testing is never performed in-house.
Electrospray ionization mass spectrometry (ESI-MS) confirms the molecular weight of the compound matches the theoretical mass of the target peptide. This rules out substitution, truncated sequences, or mislabelled vials.