Guides

Questions worth answering before deciding whether a supplier is worth believing. Each one is answered from chemistry, method or statute rather than from opinion.

How to read a certificate of analysis

A certificate is the only thing standing between a claim and a measurement. It is also routinely misread, and a seller benefits from that.

What happens to a parcel at the border

The commonest worry about ordering reagents is not quality but whether the parcel arrives. Half of that answer depends on where it was sent from. The other half has nothing to do with the parcel at all.

Purity and peptide content are not the same number

A vial can be 99% pure and 81% peptide at the same time, and both figures are correct. They answer different questions.

Reconstitution and storage

Handling notes for lyophilised material in a laboratory. This page describes procedure and arithmetic. It does not say what any material is for, or how much of it to use.

BPC-157: what the compound is

BPC-157 is a synthetic peptide of fifteen amino acids, sequence GEPPPGKPADDAGLV, formula C62H98N16O22, molar mass about 1419 g/mol, CAS 137525-51-0. The name stands for Body Protection Compound and comes from a research paper rather than from an approval. It holds no marketing authorisation in the UK or the EU, and the published work is in cells and animals.

Are research peptides legal?

There is no general answer. In both EU and UK law a substance becomes a medicinal product either through the way it is presented or through what it does in the body, and that test is applied case by case to particular facts. This page describes the test and the sources it comes from. It describes the law and is not legal advice.

BPC-157 and the FDA bulks list

A regulator wrote down, in a citable document, why a certificate showing only a purity figure does not describe an impurity profile. That document is about BPC-157, and it is worth reading for what it actually says.

Peptides and the WADA Prohibited List

Whether a compound appears on an anti-doping list is a fact about a document, and one of the few facts in this category that can be checked in a minute. It is also routinely guessed at rather than looked up.