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    Reference Chart

    Peptide Categories — A Research Reference Chart

    Research peptides fall into a handful of functional families. This reference groups the most-studied compounds by pathway focus, with representative examples and typical laboratory research use.
    CategoryRepresentative PeptidesTypical Research Focus
    Healing & Tissue RepairBPC-157, TB-500 (Thymosin β4 fragment), GHK-CuBench models of wound healing, tendon and ligament repair, gut-lining research, and cell-migration studies.
    GHRP & GHRH AnalogsCJC-1295, Ipamorelin, Sermorelin, Tesamorelin, GHRP-2, GHRP-6Endocrinology reference research, pituitary receptor studies, and comparative pharmacology of GHRP vs GHRH mechanisms.
    Metabolic Reference Analogs (GLP-1 family)Semaglutide, Tirzepatide, Retatrutide, LiraglutideIn-vitro incretin-receptor binding assays, comparative-analog research, and metabolic-signaling reference work.
    Cognitive & Nootropic PeptidesSemax, Selank, Cerebrolysin (fragment references), DihexaNeuroscience reference research on BDNF, cholinergic and dopaminergic pathways, and cortex-signaling models.
    Cosmetic & Melanocortin PeptidesMelanotan II, PT-141 (Bremelanotide), GHK-CuMelanocortin-receptor pharmacology reference, pigmentation-pathway research, and topical-formulation stability studies.
    Immune & Thymic PeptidesThymosin α-1, Thymosin β4 (TB-500 parent), LL-37Immunology reference research, T-cell differentiation assays, and comparative-innate-immunity models.

    Healing & Tissue Repair

    Keyword cluster: bpc-157 research, tb-500 research, ghk-cu peptide, tissue repair peptides

    Peptides studied for their effects on angiogenesis, extracellular-matrix remodeling, and tissue-repair signaling in preclinical models.

    Examples: BPC-157 · TB-500 (Thymosin β4 fragment) · GHK-Cu

    Typical use in the lab: Bench models of wound healing, tendon and ligament repair, gut-lining research, and cell-migration studies.

    GHRP & GHRH Analogs

    Keyword cluster: cjc-1295 ipamorelin research, ghrp-2 vs ghrp-6, sermorelin research, tesamorelin research

    Growth-hormone-releasing peptides and growth-hormone-releasing-hormone analogs studied for pulsatile GH release in vitro and in animal models.

    Examples: CJC-1295 · Ipamorelin · Sermorelin · Tesamorelin · GHRP-2 · GHRP-6

    Typical use in the lab: Endocrinology reference research, pituitary receptor studies, and comparative pharmacology of GHRP vs GHRH mechanisms.

    Metabolic Reference Analogs (GLP-1 family)

    Keyword cluster: semaglutide research, tirzepatide research, retatrutide research, glp-1 analog research

    Reference analogs of the GLP-1 and dual/triple incretin receptor families widely used in metabolic-pathway research and receptor-binding studies.

    Examples: Semaglutide · Tirzepatide · Retatrutide · Liraglutide

    Typical use in the lab: In-vitro incretin-receptor binding assays, comparative-analog research, and metabolic-signaling reference work.

    Cognitive & Nootropic Peptides

    Keyword cluster: semax research peptide, selank research, nootropic peptides research

    Short peptides studied for effects on BDNF expression, neurotransmitter modulation, and stress-response signaling in neuroscience models.

    Examples: Semax · Selank · Cerebrolysin (fragment references) · Dihexa

    Typical use in the lab: Neuroscience reference research on BDNF, cholinergic and dopaminergic pathways, and cortex-signaling models.

    Cosmetic & Melanocortin Peptides

    Keyword cluster: melanotan ii research, pt-141 research, melanocortin peptides

    Peptides with reported activity on melanocortin receptors (MC1R–MC5R) and dermal signaling — studied in cosmetic-formulation and pigmentation research.

    Examples: Melanotan II · PT-141 (Bremelanotide) · GHK-Cu

    Typical use in the lab: Melanocortin-receptor pharmacology reference, pigmentation-pathway research, and topical-formulation stability studies.

    Immune & Thymic Peptides

    Keyword cluster: thymosin alpha-1 research, thymosin beta-4 research, ll-37 peptide

    Thymic-origin peptides studied for effects on T-cell maturation, cytokine profiles, and innate-immunity signaling in preclinical work.

    Examples: Thymosin α-1 · Thymosin β4 (TB-500 parent) · LL-37

    Typical use in the lab: Immunology reference research, T-cell differentiation assays, and comparative-innate-immunity models.

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