Compounds
Mechanism overviews for the most-researched peptides. Drawn from the same expert knowledge base that powers Raphael.
- QA-08
What does BPC-157 research show?
BPC-157 (Body Protection Compound) is a 15-amino-acid sequence studied in preclinical models for tissue-repair, gut-mucosal-integrity, and angiogenesis pathways. Research is largely rodent-based; no human therapeutic claims are approved.
- QA-09
TB-500 vs BPC-157: what is the difference?
Both are studied in tissue-repair research, but they act on different pathways. BPC-157 is a 15-AA sequence derived from gastric juice, studied for angiogenesis and gut healing. TB-500 (a fragment of Thymosin β4) is studied for actin regulation and cell migration.
- QA-10
What does GHK-Cu research show?
GHK-Cu is a copper-binding tripeptide (glycyl-histidyl-lysine bound to Cu²⁺) studied for its role in skin remodeling, collagen and elastin synthesis, antioxidant signaling, and wound-repair pathways in preclinical models.
- QA-11
How are Ipamorelin and CJC-1295 studied together?
Ipamorelin (a GHRP / ghrelin-receptor agonist) and CJC-1295 (a GHRH analog) act on complementary arms of the GH axis. Researchers combine them in preclinical models to study pulsatile growth hormone release.
- QA-12
Semaglutide vs Tirzepatide: research compound comparison
Both are studied in metabolic-pathway research. Semaglutide is a single GLP-1 receptor agonist; Tirzepatide is a dual GIP/GLP-1 receptor agonist. The dual mechanism is the primary structural difference investigated in preclinical metabolic models.
- QA-13
What is Retatrutide?
Retatrutide is a triple-agonist research peptide that activates the GLP-1, GIP, and glucagon receptors. It is studied in preclinical metabolic-pathway models for its combined incretin and glucagonergic effects.
- QA-14
Semax vs Selank: cognitive research peptides
Semax and Selank are heptapeptide research compounds developed in Russia. Semax is studied primarily for neurotrophic effects (BDNF/NGF expression). Selank is studied for anxiolytic-like behavior via GABAergic and immunomodulatory pathways.
- QA-15
What is MOTS-c?
MOTS-c is a 16-amino-acid mitochondrial-derived peptide encoded by mitochondrial DNA. It is studied in preclinical models for its role in metabolic homeostasis, insulin sensitivity, and AMPK-pathway signaling.
- QA-16
What is Epitalon and what does research show?
Epitalon is a synthetic tetrapeptide (Ala-Glu-Asp-Gly) developed from pineal-gland extract research. It is studied in preclinical models for telomerase activity, circadian-rhythm and pineal-axis signaling, and cellular-senescence pathways.
- QA-17
What is PT-141 (Bremelanotide)?
PT-141 (Bremelanotide) is a synthetic analog of α-MSH that acts as a melanocortin-receptor agonist (MC3R/MC4R). It is studied in preclinical models for central-nervous-system sexual-behavior pathways and related neuroendocrine signaling.
- QA-18
What is SS-31 / Elamipretide?
SS-31 (Elamipretide) is a synthetic tetrapeptide that selectively targets the inner mitochondrial membrane by binding cardiolipin. It is studied in preclinical models for mitochondrial bioenergetics, oxidative-stress resilience, and ATP production.
- QA-19
What does Thymosin Alpha-1 research show?
Thymosin Alpha-1 (Tα1) is a 28-amino-acid peptide naturally produced by the thymus. It is studied in preclinical models for T-cell maturation, dendritic-cell modulation, and Toll-like-receptor signaling in the immune system.
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