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Sourcing and provenance
Where research peptides come from, how to check a vendor with documents, and what an importer and a buyer are actually responsible for.
- Sourcing and provenanceWhere research peptides are made, and what USA-made meansMost research peptides are synthesized by contract manufacturers, many of them in China, some in Europe and the United States. What each step of the chain is, what a 'USA-made' label can legally mean, and what a chain-of-custody record should contain.
- Sourcing and provenancePeptide purity grades, salt exchange and modificationsThe grade ladder from crude to 98 per cent and what each is used for, what a salt exchange adds to price and lead time, and the modifications a custom order can specify.
- Sourcing and provenanceImport Alert 66-41: why overseas peptide orders get detainedWhat an FDA import alert is, what 'detention without physical examination' means, what Import Alert 66-41 actually covers, what the notices say, and the 5,000-shipment Cincinnati case, from FDA's and CBP's own records.
- Sourcing and provenanceHow to vet a peptide vendor with documents, not with forumsA document-by-document checklist for judging a research peptide supplier: lot-specific certificates, identity as well as purity, net peptide content, a named manufacturer and a verifiable laboratory.
- Sourcing and provenanceCosmetic-grade vs research-grade peptidesWhat an INCI name is and who assigns it, what documents a cosmetic formulator needs from an ingredient supplier, and why a vial labelled research use only is not a cosmetic raw material.
Other shelves
- Reading the paperworkWhat each line on a certificate measures, and what a weak one leaves out.15 pieces
- How it is madeSynthesis, freeze-drying, formulation and format: how a peptide becomes the vial, spray or strip on the shelf, and where the cost goes.4 pieces
- HandlingStorage, stability and the arithmetic of a stock solution.7 pieces
- Where the line isWhat this site will and will not say about the material it sells, and why.11 pieces
- The moleculesWhat each peptide is: sequence, class, salt form, naming, and its regulatory status on a given date. Never what it does in a person.13 pieces
Nothing here is medical advice. Everything on this site is supplied for laboratory research use only.