How a Sequence Gets Built, One Residue at a Time
The hardest impurity to remove from a synthetic peptide is the one that is almost the peptide: a chain identical to the target except that a single residue never went on.
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Background reading on peptide classes, nomenclature and receptor pharmacology as described in the published literature.
The hardest impurity to remove from a synthetic peptide is the one that is almost the peptide: a chain identical to the target except that a single residue never went on.
Putting several compounds into one vial and lyophilizing them together is a packaging choice, not a chemical one.
Two compounds in this catalog are routinely called mitochondrial peptides, and the word is doing completely different work in each case.
Three melanocortin compounds turn up in most catalogs, and two of them are separated by a single dalton.
Semax gets described as an ACTH(4–10) analog. That is near enough for a catalog line and slightly wrong in a way that matters once you start reading certificates…
Selank is seven residues long and has a four-residue ancestor. Knowing which four came first, and what the remaining three are doing…
GHK-Cu is one of the few things in a peptide catalog that is not, strictly, a peptide. It is a coordination complex — a tripeptide with a copper ion bound to it —…
On its own the phrase "third-party tested" carries almost no information. It sits equally comfortably above a document that demonstrates a great deal and above one…
PT-141 differs from melanotan-II by one amide group and behaves very differently at the receptor.
Sermorelin is the minimal fully active GHRH fragment, left unmodified. Where it is cleaved, why the C-terminal amide matters…
Three numbers appear throughout the peptide literature and are routinely treated as interchangeable. They measure different things under different conditions.
KLOW is not a molecule. It is four separate research peptides supplied together in one vial, which means any evaluation of it has to be built component by component.
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