USP (United States Pharmacopeia) is the official pharmacopoeia of the United States, published and maintained by the United States Pharmacopeial Convention, a non-governmental non-profit organisation founded in 1820. It establishes quality, purity, identity and strength standards for medicines, active substances (APIs), excipients and dietary supplements marketed in the USA. USP monograph compliance is legally mandatory under the Federal Food, Drug, and Cosmetic Act (FD&C Act, 1938) for any USP-labelled product.
Structure and key chapters. USP is organised into individual monographs (specifications by substance, e.g., Insulin Human USP, Somatropin USP, Octreotide Acetate USP) and numbered general chapters. For peptide chemistry, essential chapters are: <621> Chromatography (standard RP-HPLC methods), <71> Sterility Tests, <85> Bacterial Endotoxins Test (LAL), <87> <88> Biological Reactivity Tests, <232> <233> Elemental Impurities (heavy metals, ICP-MS), <731> Loss on Drying, <761> NMR, <1055> Biotechnology-Derived Articles–Peptide Mapping, <1086> Impurities, <1226> Verification of Compendial Procedures, <1231> Water for Pharmaceutical Purposes, <1225> Validation of Compendial Procedures.
Relation to Ph. Eur. and JP. USP forms with the European Pharmacopoeia (Ph. Eur., published by EDQM, Council of Europe) and the Japanese Pharmacopoeia (JP) the trio of major internationally recognised pharmacopoeias. The ICH (International Council for Harmonisation, tripartite USA/EU/Japan group) aims to harmonise technical requirements between these pharmacopoeias via ICH Q1-Q14 guidelines. In practice, a globally marketed peptide API must satisfy all three pharmacopoeias (often via double testing for slightly divergent specifications).
USP and RUO peptides. RUO peptides (Research Use Only) distributed for preclinical research are not bound by USP monographs (as non-pharmaceutical), but many qualified suppliers voluntarily apply analytical specifications inspired by USP (HPLC >98% per <621>, LAL endotoxins per <85>, MS identity per <1055>) to guarantee quality and reproducibility of scientific studies.
Décryptez la caractérisation complète d'un peptide : RP-HPLC préparative et analytique, LC-MS haute résolution Orbitrap/QTOF, RMN 2D (COSY/TOCSY/NOESY), dégradation d'Edman, cartographie peptidique MS/MS, dichroïsme circulaire. Les 10 techniques qui séparent un peptide research-grade d'un peptide douteux, avec seuils de détection et stratégie de QC.
Maitrisez les mecanismes qui detruisent vos peptides : oxydation Met, deamidation Asn, hydrolyse, aggregation. Protocoles de lyophilisation, conditions de stockage, reconstitution optimale et QC shelf-life. Le pilier technique que tout laboratoire doit integrer pour garantir l'integrite de ses peptides en recherche exploratoire.
Principe Merrifield, stratégies Fmoc et Boc, résines (Wang, Rink amide, 2-chlorotrityl), agents de couplage (HBTU, HATU, DIC/HOBt), cycle de synthèse, clivage TFA, purification RP-HPLC, contrôle qualité LC-MS et test Kaiser. Le pilier scientifique de référence sur la fabrication des peptides synthétiques.