Semax and Selank are both synthetic peptides developed in Russia and widely studied in central nervous system (CNS) and neuropeptide research, but they derive from different parent molecules. In published preclinical literature, Semax is a fragment-derived analog of the adrenocorticotropic hormone sequence ACTH(4–10), while Selank is a synthetic analog of the immunomodulatory peptide tuftsin. Because […]
Research & Education
Retatrutide vs Semaglutide vs Tirzepatide: How the Incretin Research Peptides Differ
The defining difference between these three incretin research peptides is how many hormone receptors each one targets. Semaglutide is a single agonist that activates only the GLP-1 receptor. Tirzepatide is a dual agonist that activates both the GIP and GLP-1 receptors. Retatrutide is a triple agonist that activates the GIP, GLP-1, and glucagon receptors. That […]
Melanotan 1 vs Melanotan 2: What Is the Difference? (Research Overview)
Melanotan 1 and Melanotan 2 are both synthetic analogs of the natural hormone α-melanocyte–stimulating hormone (α-MSH) studied in melanocortin and pigmentation research, but they differ most importantly in receptor selectivity. Melanotan I (afamelanotide) is a more selective, α-MSH–oriented analog whose activity is directed largely at the melanocortin-1 receptor (MC1R). Melanotan II is a broader, non-selective […]
What Is Melanotan I (Melanotan-1 / Afamelanotide)?
Melanotan I is a synthetic analog of alpha-melanocyte-stimulating hormone (α-MSH), studied in laboratory melanocortin-receptor and pigmentation models. Bolt Peptide material is supplied strictly for controlled in-vitro laboratory research by qualified professionals. It is not a finished pharmaceutical product and is not for human use. Quick facts Class: synthetic α-MSH analog / melanocortin-receptor agonist Research focus: […]
What Is the Wolverine Blend (BPC-157 / TB-500)?
The Wolverine Blend is a combined research preparation of two peptides — BPC-157 and TB-500 — supplied together in a single vial. The two compounds are frequently studied alongside one another in laboratory and animal tissue-repair research because each is associated with distinct, complementary mechanisms: BPC-157 is investigated for angiogenic and cytoprotective activity, while TB-500 […]
What Is Sermorelin? A Research Overview
Sermorelin is a synthetic 29-amino-acid peptide analog of growth-hormone-releasing hormone (GHRH 1–29), studied in preclinical and clinical research as a growth-hormone-releasing factor that acts on the pituitary GHRH receptor. It corresponds to the first 29 amino acids of native human GHRH — the shortest fragment retaining the full biological activity of the parent hormone. This […]
What Is Oxytocin? A Research Overview
Oxytocin is a nine-amino-acid neuropeptide hormone produced in the hypothalamus and released from the posterior pituitary gland. It is studied in social-behavior, reproductive, and neuroendocrine research through the oxytocin receptor. This article is an analytical overview for laboratory and scientific audiences. It does not provide a protocol or make use or outcome claims. Quick facts […]
BPC-157 vs TB-500: What Is the Difference? (Research Overview)
Both BPC-157 and TB-500 are research peptides studied in tissue-repair and cell-migration models, but they are chemically and mechanistically distinct. BPC-157 is a synthetic pentadecapeptide (15 amino acids) based on a partial sequence of a protein identified in gastric juice, whereas TB-500 is a synthetic peptide fragment that copies the actin-binding region of the protein […]
CJC-1295 vs Ipamorelin: What Is the Difference? (Research Overview)
The short answer: both CJC-1295 and Ipamorelin act on the growth-hormone (GH) axis, but through entirely different receptors — which is exactly why researchers study them together. CJC-1295 is a long-acting growth-hormone-releasing hormone (GHRH) analog that binds the GHRH receptor, while Ipamorelin is a growth-hormone secretagogue (a ghrelin/GHS-receptor agonist) that binds a separate receptor. Because […]
Semaglutide vs Tirzepatide: What Is the Difference? (Research Overview)
The core difference is mechanism: semaglutide is a single GLP-1 receptor agonist, while tirzepatide is a dual agonist that activates both GIP and GLP-1 receptors. This article compares molecular pharmacology and published research models. Bolt Peptide materials are research-use-only references for controlled laboratory study and are not for human or veterinary use. Quick comparison […]
