This category splits into two mechanistically distinct groups that are frequently conflated. GHRH analogues — sermorelin, tesamorelin, CJC-1295 — act at the growth-hormone-releasing hormone receptor. Secretagogues such as ipamorelin and MK-677 act instead at the ghrelin receptor (GHS-R1a). The distinction is the reason the two are studied together in the literature: research examines whether the combination produces a different secretory profile than either class alone.
IGF-1 LR3 belongs to neither group. It is a modified insulin-like growth factor with reduced binding-protein affinity, studied downstream of growth hormone signalling rather than upstream of it, and is included here because the research questions connect.
Structural detail is published on every compound page in this category: full amino acid sequence where the compound is a peptide, CAS number, molecular formula and molar mass. Each lot carries an independent certificate showing measured purity and measured content, linked to the batch code on the vial. Supplied strictly as laboratory research materials.