Peptide purity refers to the percentage of the desired peptide present in a sample relative to all other compounds. High purity is essential for reliable and reproducible research results, as impurities can interfere with biological assays and lead to misleading conclusions.
At Research Labs, we maintain a strict ≥99% purity standard across our entire catalog. This is achieved through advanced solid-phase peptide synthesis (SPPS) followed by multiple rounds of purification using High-Performance Liquid Chromatography (HPLC).
Verification is performed using two complementary analytical methods: Reverse-Phase HPLC confirms the purity percentage by separating the target peptide from any byproducts, while Electrospray Ionization Mass Spectrometry (ESI-MS) confirms the molecular identity of the peptide by measuring its exact molecular weight.
Every batch produced is accompanied by a Certificate of Analysis (COA) that includes both the HPLC chromatogram and the mass spectrum, ensuring full transparency and traceability for researchers.