The research peptide supplier market has undergone significant disruption over the past two years. Vendor consolidations, voluntary shutdowns, and increased regulatory scrutiny have forced laboratories and independent researchers to re-evaluate their sourcing strategies mid-project. For researchers who built procurement workflows around established suppliers, these disruptions are more than an inconvenience. They represent a genuine threat […]
Introduction In peptide research, the quality of results depends heavily on the purity and identity of the compounds used. A Certificate of Analysis (COA) is the primary document that establishes whether a research peptide meets the standards required for reliable laboratory work. Yet COAs vary significantly across suppliers, and not all researchers are familiar with […]
Tirzepatide is a synthetic dual agonist peptide that acts at both the glucagon-like peptide-1 receptor (GLP-1R) and the glucose-dependent insulinotropic polypeptide receptor (GIPR), two members of the class B G protein-coupled receptor family that play central roles in incretin-mediated regulation of insulin secretion and metabolic homeostasis. The compound was developed by Eli Lilly and Company […]
Thymosin Alpha-1 (Ta1), also designated thymalfasin in the pharmacological literature, is a naturally occurring 28-amino acid peptide originally isolated from thymosin fraction 5 of bovine thymus tissue by Allan Goldstein and colleagues at George Washington University in 1977. The compound was identified during a systematic research program examining the biological activities of thymic peptides, a […]
Tesamorelin is a synthetic analog of endogenous growth hormone-releasing hormone (GHRH), the hypothalamic peptide responsible for stimulating growth hormone secretion from somatotroph cells of the anterior pituitary gland. The compound consists of the complete 44-amino acid sequence of human GHRH(1-44) conjugated at its N-terminus to a trans-3-hexenoic acid moiety, a structural modification that confers substantially […]
TB-500 is a synthetic peptide fragment derived from Thymosin Beta-4 (TB4), a naturally occurring 43-amino acid protein that is found in virtually all nucleated mammalian cells and has been identified in particularly high concentrations in platelets, wound fluid, and various tissue types. The compound was isolated and studied as a means of examining the biological […]
Semaglutide is a synthetic analog of glucagon-like peptide-1 (GLP-1), an endogenous incretin hormone produced by enteroendocrine L-cells of the gastrointestinal tract in response to nutrient ingestion. The compound was developed by Novo Nordisk and first described in the scientific literature in the mid-2000s as part of a broader research program investigating long-acting GLP-1 receptor agonists […]
Retatrutide, also designated LY3437943 in the published scientific literature, is a synthetic triple receptor agonist peptide designed to engage three distinct G protein-coupled receptors involved in incretin and energy homeostasis biology: the glucagon-like peptide-1 receptor (GLP-1R), the glucose-dependent insulinotropic polypeptide receptor (GIPR), and the glucagon receptor (GCGR). The compound was developed by Eli Lilly and […]
Nicotinamide adenine dinucleotide (NAD+) is a naturally occurring dinucleotide coenzyme found in all living cells that has been a subject of biochemical research since its initial identification by Arthur Harden and William John Young in 1906 during studies of yeast fermentation. The compound exists in two primary redox forms, the oxidized form designated NAD+ and […]
MOTS-c, an acronym for mitochondrial open reading frame of the 12S rRNA type-c, is a mitochondria-derived peptide (MDP) encoded within the mitochondrial genome rather than the nuclear genome, a characteristic that distinguishes it from the vast majority of bioactive peptides studied in preclinical research. The compound was first identified and characterized by Lee and colleagues […]
