Peptide Research Library

Reference guides for laboratory researchers on peptide documentation, analytical methods, nomenclature, storage, and terminology. Each guide is written as a neutral technical reference. For lot-specific test results, see the COA Library.

How to Read a Peptide Certificate of Analysis (COA)

What every section of a peptide Certificate of Analysis means, from HPLC purity to mass spectrometry identity, and the red flags that should make you ask questions. Read the guide →

Research Peptide Purity: What “≥99% by HPLC” Actually Means

HPLC purity, net peptide content, and the impurities synthesis leaves behind: why a purity percentage alone never tells the whole story. Read the guide →

Lyophilized Peptide Storage and Stability: A Laboratory Reference

Temperature, moisture, light, and the chemistry behind peptide degradation: a practical reference for storing freeze-dried research peptides. Read the guide →

Peptide Nomenclature, CAS Numbers, and Sequences Explained

One-letter and three-letter codes, terminal modifications, unnatural amino acids, and why the same peptide can carry more than one CAS number. Read the guide →

Glossary of Peptide Research Terms

Plain-language definitions of the terms you will meet on peptide documentation and in the literature, from amidation to TFA. Read the guide →

All materials supplied by The Pure Vial Co. are for laboratory, analytical, and scientific research use only and are not intended for human or veterinary use. See our Research Disclaimer.

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