DAC or no DAC
The two CJC-1295 forms differ in half-life and in how they are handled analytically. Say which one your protocol used before comparing quotations — the price difference is not only margin.
Peptide range · Growth hormone axis
GHRH analogues, ghrelin-receptor secretagogues and GH fragments — three sub-families that behave differently and are routinely compared as if they were one.
Overview
Three distinct mechanisms are usually lumped together as “growth hormone peptides”: GHRH analogues such as Sermorelin, Tesamorelin and CJC-1295; ghrelin-receptor agonists such as Ipamorelin, GHRP-2, GHRP-6 and Hexarelin; and fragments of growth hormone itself, 176–191 and AOD-9604. MGF and PEG-MGF sit alongside them as growth-factor isoforms.
The CJC-1295 pair is the clearest example of why a code matters: the DAC version carries a drug-affinity complex that binds albumin, and it has a very different circulating profile from the no-DAC version. They are two catalogue items with two codes, not two pack sizes of the same thing.
Catalogue
Every item below is a separate code with its own specification. Where a product exists in several salt forms, each form is listed and priced separately.
Specification
Three things decide whether two quotations for the “same” peptide are actually the same material.
The two CJC-1295 forms differ in half-life and in how they are handled analytically. Say which one your protocol used before comparing quotations — the price difference is not only margin.
Ghrelin mimetics and GHRH analogues act on different receptors. A supplier's “GH peptide” could be either, and the certificate is the only place that will tell you.
176–191 is a fragment with its own molecular weight and its own activity profile. It is not a weaker version of growth hormone.
Other ranges
Quotation
Send the codes, the quantities and the destination. You will get a written quotation with lead time, packaging options and the documentation set for each item.