Published literature, mechanisms, and protocols, organized by compound. Educational reference, not medical advice.
How tirzepatide was engineered as a single-molecule GIP and GLP-1 receptor agonist: its GIP-derived sequence, albumin-binding fatty-acid tail, imbalanced receptor pharmacology, and layered FDA approval history.
A research-library overview of Thymosin Alpha-1 (Tα1 / thymalfasin / Zadaxin): its fraction-5 isolation lineage, acidic 28-residue chemistry and NMR-reported structure, TLR9/dendritic-cell pharmacology, and divergent regulatory footprint. Educational reference.
How a single N-terminal hexenoyl group turned native GHRH(1-44) into tesamorelin: the chemistry, the DPP-IV problem it solves, and the FDA approval record of the first GHRH analog cleared in the US. Educational reference.
TB-500 is the synthetic, N-acetylated LKKTETQ heptapeptide drawn from the central actin-binding region of thymosin beta-4. This overview traces the fragment's beta-thymosin lineage, its molecular properties, how it is classified, and its regulatory standing. Educational reference.
An overview of SS-31 (elamipretide / Bendavia): its aromatic-cationic tetrapeptide design, potential-independent cardiolipin targeting, place among mitochondrial pharmacology classes, and its 2025 FDA accelerated approval. Educational reference.
An overview of Semax as an engineered ACTH(4-10) heptapeptide: how the Pro-Gly-Pro tail and N-terminal copper-binding motif define its chemistry, its melanocortin classification, and its documented Russian registration pathway.
A structure-first reference on semaglutide, tracing how fatty-diacid acylation, a DPP-4-resistant Aib substitution, and the SNAC oral-delivery system emerged from three decades of GLP-1 analogue engineering at Novo Nordisk.
How a Pro-Gly-Pro extension turned the fleeting immunopeptide tuftsin into Selank, a metabolically stabilized heptapeptide studied across GABAergic and enkephalinergic pathways in Russian preclinical and clinical literature.
Retatrutide (LY3437943) is a synthetic acylated peptide engineered as a single-molecule agonist at three metabolic receptors. This reference profiles its GIP-derived scaffold, unbalanced triple-receptor potency, and place in the incretin-peptide development timeline.
From a melanotan-II side product to the first approved melanocortin agonist: an educational reference on PT-141 (bremelanotide) chemistry, MC4R pharmacology, and its regulatory record.
A neutral, citation-based overview of Pinealon (EDR), the Glu-Asp-Arg tripeptide from the Khavinson bioregulator program: its short-peptide chemistry, cell-penetrating behavior, cytogen classification, and research-use-only regulatory standing.
An educational overview of oxytocin (acetate salt): its nine-residue sequence and disulfide ring, acetate salt form, neurohypophysial classification against vasopressin, US regulatory record, and the 1953 du Vigneaud total synthesis that made it the first synthesized peptide hormone.
A research-library overview of nicotinamide adenine dinucleotide (NAD+): its dinucleotide chemistry, dual redox and signaling roles, salvage and de novo biosynthesis, subcellular compartmentalization, and a discovery history spanning 1906 to the sirtuin era. Educational reference.
How dual terminal modification distinguishes N-Acetyl Semax Amidate from Semax: acetylation and amidation chemistry, ACTH(4-10) lineage, melanocortin classification, and US regulatory status. Educational reference.
N-Acetyl Selank Amidate is a terminally blocked analog of the tuftsin-derived heptapeptide Selank. This overview examines its sequence lineage, N-acetyl and C-amide modifications, and pharmacological classification from the primary literature. Educational reference.
An educational overview of Melanotan-2 (MT-II): its lactam-bridged cyclic heptapeptide architecture, non-selective melanocortin receptor classification, University of Arizona discovery lineage, and role as the structural ancestor of bremelanotide.
MOTS-c is a 16-residue peptide translated from a short open reading frame inside the mitochondrial 12S rRNA gene, and one of the first identified members of the mitochondrial-derived peptide class. Educational reference.
A research-library profile of mazdutide (IBI362 / LY3305677): an engineered oxyntomodulin analog and dual GLP-1/glucagon receptor agonist, examined through its peptide chemistry, incretin lineage, and documented NMPA regulatory timeline. Educational reference.
KPV is the C-terminal tripeptide of α-MSH (Lys-Pro-Val). This overview traces its origin as a cleaved melanocortin fragment, the receptor-independent pharmacology reported in the literature, and its regulatory classification. Educational reference.
How a melanoma metastasis-suppressor gene named in Hershey, Pennsylvania yielded KP-10, the ten-residue RF-amide fragment that deorphanized GPR54. A structure- and discovery-driven reference on kisspeptin-10. Educational reference.
Ipamorelin traced from a research angle: how a GHRP-1-derived pentapeptide came to be described as the first selective growth hormone secretagogue, its GHS-R1a classification, discovery lineage at Novo Nordisk, and RUO regulatory standing.
Why two deliberate changes to the IGF-1 sequence — an N-terminal extension and an Arg-3 substitution — produced a research reagent that engages IGF-1R while escaping the binding-protein family. Educational reference.
A research-library profile of hexarelin (examorelin): the hexapeptide's D-2-methyltryptophan chemistry, its position in the GHRP secretagogue lineage, dual GHS-R1a and CD36 binding described in the literature, and its Phase II development history. Educational reference.
An educational overview of glutathione (GSH): the atypical gamma-glutamyl bond, cysteine thiol reactivity, the GSH/GSSG couple, two-step ATP-dependent biosynthesis, and how the tripeptide was characterized. Educational reference.
An educational overview of GHRP-6, the founding peptidyl growth hormone secretagogue: its enkephalin-derived hexapeptide chemistry, GHS-R1a classification, and the discovery record that preceded ghrelin. Educational reference.
GHRP-2 (pralmorelin, KP-102) is a synthetic hexapeptide growth hormone secretagogue defined by its D-2-naphthylalanine residue. This overview traces its chemistry, ghrelin-receptor pharmacology, and status as the first GHS approved for diagnostic use in Japan. Educational reference.
GHK-Cu is the copper(II) complex of the plasma tripeptide glycyl-histidyl-lysine. This reference examines its coordination chemistry, its origin as a collagen fragment, how it is classified in the literature, and its regulatory standing. Educational reference.
How the four-residue AEDG sequence was isolated from the pineal extract Epithalamin, why the Khavinson "short peptide bioregulator" framework matters, and where the telomerase and regulatory literature actually stands. Educational reference.
An educational overview of CJC-1295 without DAC (Modified GRF 1-29): the four amino acid substitutions that resist DPP-4 cleavage, how it differs from the DAC-bearing variant, and the regulatory history of its GRF(1-29) scaffold.
An educational profile of CJC-1295 with DAC, tracing its albumin-binding Drug Affinity Complex chemistry, the four substitutions that stabilize the GHRH(1-29) scaffold, and its documented ConjuChem research lineage.
How cagrilintide (AM833) re-engineers the amylin scaffold: the amyloid-fibril problem in native amylin, the C20 acylation strategy behind extended circulation, and its place in the CagriSema program. Educational reference.
An educational overview of BPC-157, the proline-rich pentadecapeptide derived from a human gastric-juice protein: its sequence, acid-stable chemistry, pharmacokinetic profile, and the Zagreb research lineage that characterized it. Educational reference.
How a 16-residue synthetic peptide isolated the lipid-regulatory tail of human growth hormone: the design logic behind AOD9604, its receptor-independence question, and the six-trial human safety record that shaped its regulatory path.
