# NexPep Full AI Context NexPep sells laboratory research peptides and research supplies for in vitro research use only. This context file is designed for AI answer engines, search agents, and retrieval systems that need concise product, COA, and research-library context. ## Public Safety And Categorization Notes - Category: ecommerce, laboratory research supplies, research peptides. - Use case: qualified research and in vitro laboratory work. - Not for: human use, veterinary use, medical treatment, diagnosis, prescription advice, or supplement recommendations. - Trust signals: HPLC purity references, batch-specific COA pages, research-only disclaimers, US shipping, visible product catalog. ## Product Catalog TRZ | GLP-2 | 30mg Handle: tirzepatide-30mg URL: https://nexpep.com/products/tirzepatide-30mg Category: weight-management Unit size: 30mg Purity: ≥99% (HPLC) CAS: 2023788-19-2 Price: $119.99 COA: available at https://nexpep.com/coa/tirzepatide-30mg Summary: TRZ (GLP-2) is a synthetic dual glucose-dependent insulinotropic polypeptide (GIP) and glucagon-like peptide-1 receptor agonist developed for advanced laboratory research applications. This 39-amino acid peptide demonstrates high binding affinity for both G... --- TRZ | GLP-2 | 60mg Handle: tirzepatide-60mg URL: https://nexpep.com/products/tirzepatide-60mg Category: weight-management Unit size: 60mg Purity: ≥99% (HPLC) CAS: 2023788-19-2 Price: $179.99 COA: available at https://nexpep.com/coa/tirzepatide-60mg Summary: TRZ (GLP-2) is a synthetic dual glucose-dependent insulinotropic polypeptide (GIP) and glucagon-like peptide-1 receptor agonist developed for advanced laboratory research applications. This 39-amino acid peptide demonstrates high binding affinity for both G... --- Reta | GLP-3 | LY3437943 | 10mg Handle: retatrutide-10mg URL: https://nexpep.com/products/retatrutide-10mg Category: weight-management Unit size: 10mg Purity: ≥99% (HPLC) CAS: 2309722-59-4 Price: $149.99 COA: available at https://nexpep.com/coa/retatrutide-10mg Summary: Reta is a synthetic triple receptor agonist targeting GLP-1, GIP, and glucagon receptors, developed for advanced metabolic research applications. This novel peptide compound provides researchers with a unique tool for investigating the complex interplay bet... --- Reta | GLP-3 | LY3437943 | 20mg Handle: retatrutide-20mg URL: https://nexpep.com/products/retatrutide-20mg Category: weight-management Unit size: 20mg Purity: ≥99% (HPLC) CAS: 2309722-59-4 Price: $199.99 COA: available at https://nexpep.com/coa/retatrutide-20mg Summary: Reta is a synthetic triple receptor agonist targeting GLP-1, GIP, and glucagon receptors, developed for advanced metabolic research applications. This novel peptide compound provides researchers with a unique tool for investigating the complex interplay bet... --- Wolverine | BPC-157 | 10mg Handle: bpc-157-10mg URL: https://nexpep.com/products/bpc-157-10mg Category: healing Unit size: 10mg Purity: ≥98% (HPLC) CAS: 137525-51-0 Price: $49.99 COA: available at https://nexpep.com/coa/bpc-157-10mg Summary: BPC-157 (Body Protective Compound-157) is a synthetic pentadecapeptide derived from a protective protein sequence found in human gastric juice, developed for advanced tissue repair and regeneration research. This stable peptide fragment demonstrates signifi... --- Repair | TB-500 | 5mg Handle: tb-500-5mg URL: https://nexpep.com/products/tb-500-5mg Category: healing Unit size: 5mg Purity: ≥98% (HPLC) CAS: 77591-33-4 Price: $49.99 COA: available at https://nexpep.com/coa/tb-500-5mg Summary: TB-500 is a synthetic analog of Thymosin Beta-4 (Tβ4), a naturally occurring 43-amino acid peptide, developed for advanced cellular research applications. This peptide serves as a valuable research tool for studying actin regulation, cell migration, and tis... --- Desire | PT-141 | 10mg Handle: pt-141-10mg URL: https://nexpep.com/products/pt-141-10mg Category: enhancement Unit size: 10mg Purity: ≥98% (HPLC) CAS: 32780-32-8 Price: $54.99 COA: available at https://nexpep.com/coa/pt-141-10mg Summary: PT-141 (Bremelanotide) is a synthetic peptide analog of α-melanocyte-stimulating hormone (α-MSH) developed for advanced melanocortin receptor research. This cyclic heptapeptide demonstrates selective binding affinity for melanocortin receptors MC3R and MC4R... --- Vitality | MOTS-c | 10mg Handle: mots-c-10mg URL: https://nexpep.com/products/mots-c-10mg Category: enhancement Unit size: 10mg Purity: ≥98% (HPLC) CAS: 1400634-44-7 Price: $49.99 COA: available at https://nexpep.com/coa/mots-c-10mg Summary: MOTS-c is a mitochondrial-derived peptide composed of 16 amino acids, encoded by the mitochondrial genome, developed for advanced cellular metabolism research. This peptide serves as a valuable research tool for studying mitochondrial function, cellular ene... --- Bacteriostatic Water 10mL Handle: bacteriostatic-water-10ml URL: https://nexpep.com/products/bacteriostatic-water-10ml Category: supplies Unit size: 10mL Purity: USP Grade CAS: 7732-18-5 Price: $14.99 COA: available at https://nexpep.com/coa/bacteriostatic-water-10ml Summary: Bacteriostatic Water for Injection, USP is a sterile, nonpyrogenic preparation of water for injection containing 0.9% (9 mg/mL) of benzyl alcohol added as a bacteriostatic preservative. This solution is specifically designed for use as a diluent or solvent... --- Bacteriostatic Water 2mL Handle: bacteriostatic-water-3ml URL: https://nexpep.com/products/bacteriostatic-water-3ml Category: supplies Unit size: 2mL Purity: USP Grade CAS: 7732-18-5 Price: $11.99 COA: available at https://nexpep.com/coa/bacteriostatic-water-3ml Summary: Bacteriostatic Water for Injection, USP is a sterile, nonpyrogenic preparation of water for injection containing 0.9% (9 mg/mL) of benzyl alcohol added as a bacteriostatic preservative. This solution is specifically designed for use as a diluent or solvent... --- Anti-Age | CJC-1295/Ipamorelin | 5mg/5mg Handle: cjc-1295-ipamorelin-blend URL: https://nexpep.com/products/cjc-1295-ipamorelin-blend Category: enhancement Unit size: 5mg/5mg Purity: ≥99% (HPLC) CAS: 863288-34-0 Price: $79.99 COA: available at https://nexpep.com/coa/cjc-1295-ipamorelin-blend Summary: CJC-1295 NO DAC/Ipamorelin Blend combines two synergistic peptides for growth hormone research. CJC-1295 NO DAC is a modified GHRH analog that stimulates growth hormone release, while Ipamorelin is a selective ghrelin receptor agonist. This combination prov... --- Chisel | Tesamorelin | 5mg Handle: tesamorelin-5mg URL: https://nexpep.com/products/tesamorelin-5mg Category: enhancement Unit size: 5mg Purity: ≥98% (HPLC) CAS: 901758-09-6 Price: $79.99 COA: available at https://nexpep.com/coa/tesamorelin-5mg Summary: Tesamorelin is a synthetic analog of growth hormone-releasing hormone (GHRH) consisting of 44 amino acids. This peptide is valuable for research into lipid metabolism, body composition changes, and growth hormone axis modulation. Tesamorelin demonstrates hi... --- Torch | AOD-9604 | 5mg Handle: aod-9604-5mg URL: https://nexpep.com/products/aod-9604-5mg Category: weight-management Unit size: 5mg Purity: ≥98% (HPLC) CAS: 221231-10-3 Price: $54.99 COA: available at https://nexpep.com/coa/aod-9604-5mg Summary: AOD-9604 is a modified fragment of human growth hormone (hGH 177-191) specifically designed for metabolic research. This peptide fragment retains the fat metabolism properties of hGH without its effects on IGF-1 or insulin sensitivity. AOD-9604 is valuable... --- Wolverine Stack | BPC-157/TB-500 | 5mg/5mg Handle: bpc-tb500-blend URL: https://nexpep.com/products/bpc-tb500-blend Category: healing Unit size: 5mg/5mg Purity: ≥98% (HPLC) CAS: Blend Price: $79.99 COA: available at https://nexpep.com/coa/bpc-tb500-blend Summary: BPC-157/TB-500 Blend combines two powerful healing peptides for comprehensive tissue repair research. BPC-157 promotes angiogenesis and cellular proliferation, while TB-500 enhances cellular migration and actin regulation. This synergistic combination provi... --- Focus | Semax | 10mg Handle: semax-10mg URL: https://nexpep.com/products/semax-10mg Category: nootropic Unit size: 10mg Purity: ≥98% (HPLC) CAS: 80714-61-0 Price: $39.99 COA: available at https://nexpep.com/coa/semax-10mg Summary: Semax is a synthetic heptapeptide analog of ACTH(4-10) developed for neurological research. This nootropic peptide demonstrates neuroprotective and neurotropic properties, making it valuable for studying cognitive function, neuroprotection, and BDNF express... --- Calm | Selank | 10mg Handle: selank-10mg URL: https://nexpep.com/products/selank-10mg Category: nootropic Unit size: 10mg Purity: ≥98% (HPLC) CAS: 129954-34-3 Price: $39.99 COA: available at https://nexpep.com/coa/selank-10mg Summary: Selank is a synthetic analog of tuftsin, an immunomodulatory peptide. This heptapeptide is valuable for research into anxiolytic mechanisms, immune modulation, and neurotransmitter regulation. Selank demonstrates unique properties in modulating serotonin me... --- Reta | GLP-3 | LY3437943 | 30mg Handle: retatrutide-30mg URL: https://nexpep.com/products/retatrutide-30mg Category: weight-management Unit size: 30mg Purity: ≥99% (HPLC) CAS: 2309722-59-4 Price: $199.99 COA: available at https://nexpep.com/coa/retatrutide-30mg Summary: Reta is a synthetic triple receptor agonist targeting GLP-1, GIP, and glucagon receptors, developed for advanced metabolic research applications. This high-dose 30mg formulation provides researchers with greater flexibility in extended protocol design and d... --- Chisel | Tesamorelin | 10mg Handle: tesamorelin-10mg URL: https://nexpep.com/products/tesamorelin-10mg Category: enhancement Unit size: 10mg Purity: ≥98% (HPLC) CAS: 901758-09-6 Price: $69.99 COA: available at https://nexpep.com/coa/tesamorelin-10mg Summary: Tesamorelin is a synthetic analog of growth hormone-releasing hormone (GHRH) consisting of 44 amino acids. This high-dose 10mg formulation provides researchers with extended protocol flexibility for studying lipid metabolism, body composition changes, and g... --- Endure | PP-332 | 5mg Handle: pp-332-5mg URL: https://nexpep.com/products/pp-332-5mg Category: enhancement Unit size: 5mg Purity: ≥99% (HPLC) CAS: 1627580-64-6 Price: $99.99 COA: available at https://nexpep.com/coa/pp-332-5mg Summary: PP-332 (SLU-PP-332) is a synthetic small-molecule agonist of estrogen-related receptors (ERRα, ERRβ, ERRγ) developed for advanced metabolic and mitochondrial research applications. This compound activates ERR signaling pathways that regulate mitochondrial b... --- Shield | SS-31 | 10mg Handle: ss-31-10mg URL: https://nexpep.com/products/ss-31-10mg Category: enhancement Unit size: 10mg Purity: ≥99% (HPLC) CAS: 736992-21-5 Price: $54.99 COA: available at https://nexpep.com/coa/ss-31-10mg Summary: SS-31 (Elamipretide, D-Arg-2′,6′-dimethyltyrosine-Lys-Phe-NH2) is a synthetic mitochondria-targeted tetrapeptide developed for advanced cellular bioenergetics and mitochondrial research. This cell-permeable peptide selectively targets cardiolipin in the inn... --- GHK-Cu | 100mg Handle: ghk-cu-100mg URL: https://nexpep.com/products/ghk-cu-100mg Category: skin Unit size: 100mg Purity: ≥98% (HPLC) CAS: 49557-75-7 Price: $79.99 COA: available at https://nexpep.com/coa/ghk-cu-100mg Summary: GHK-Cu (Copper Peptide) is a naturally occurring tripeptide with high affinity for copper(II) ions, identified in human plasma for skin regeneration and wound healing research. This larger 100mg vial provides extended research capacity for investigating tis... --- Glow | TB-500/BPC-157/GHK-Cu | 70mg Handle: glow-blend-70mg URL: https://nexpep.com/products/glow-blend-70mg Category: healing Unit size: 70mg Purity: ≥98% (HPLC) CAS: Blend-GLOW Price: $124.99 COA: available at https://nexpep.com/coa/glow-blend-70mg Summary: GLOW Blend combines three synergistic research peptides: TB-500 (Thymosin Beta-4) 10mg for tissue repair, BPC-157 (Body Protection Compound) 10mg for wound healing, and GHK-Cu (Copper Peptide) 50mg for skin regeneration. This pre-formulated blend provides r... ## Research Articles The NexPep Integrity Standard: Why 99.9% Purity is Non-Negotiable URL: https://nexpep.com/research/articles/science-of-purity-integrity-standard Category: Quality Control Published: January 28, 2026 Reading time: 8 min read Summary: Understanding the role of HPLC and Mass Spec in research-grade peptide synthesis. --- Reta | LY3437943 Sourcing Guide: How to Spot Counterfeits in 2026 URL: https://nexpep.com/research/articles/reta-sourcing-guide-2026 Category: Sourcing Published: January 29, 2026 Reading time: 12 min read Summary: A technical guide for researchers seeking legitimate API in an unregulated market. --- The 2026 Guide to Sourcing Research Peptides Safely URL: https://nexpep.com/research/articles/peptide-sourcing-guide-2026 Category: Market Analysis Published: January 29, 2026 Reading time: 10 min read Summary: How to differentiate between Tier 1 Integrity Labs and 'Generic' Resellers. --- How to Evaluate Peptide Supplier Claims: A Researcher's Bullshit Detector URL: https://nexpep.com/research/articles/how-to-evaluate-peptide-supplier-claims Category: Market Analysis Published: March 16, 2026 Reading time: 14 min read Summary: ISO badges, '7X tested' slogans, and relabeled COAs — here's what to actually look for when choosing a peptide supplier. ## Research Topic Hubs TRZ | GLP-2 URL: https://nexpep.com/research/trz - Solubility Profile in Bacteriostatic Water: Analysis of TRZ (GLP-2) solubility and stability in 0.9% benzyl alcohol bacteriostatic water solutions. (https://nexpep.com/research/trz/solubility-profile) - GLP-1 and GIP Receptor Affinity Constants: Quantitative binding data for GIP and GLP-1 receptors compared to native ligands. (https://nexpep.com/research/trz/glp1-gip-receptor-affinity) - HPLC Purity Analysis Protocol: Standard methodology for determining TRZ (GLP-2) purity using High-Performance Liquid Chromatography. (https://nexpep.com/research/trz/hplc-analysis-protocol) --- Reta | LY3437943 URL: https://nexpep.com/research/reta - Triple Agonist Mechanism (GCGR/GIPR/GLP-1R): Pharmacological profile of the first-in-class tri-agonist targeting Glucagon, GIP, and GLP-1 receptors. (https://nexpep.com/research/reta/triple-agonist-mechanism) - Receptor Selectivity & Potency Data: Comparative EC50 values for Reta across human GIP, GLP-1, and Glucagon receptors. (https://nexpep.com/research/reta/receptor-selectivity-profile) - Lyophilized Powder Stability Analysis: Long-term degradation analysis of lyophilized Reta stored at varying temperatures (-4°F vs 77°F). (https://nexpep.com/research/reta/lyophilized-stability-analysis) - Solubility & Reconstitution Protocol: Optimal solvents and pH conditions for Reta reconstitution in a laboratory setting. (https://nexpep.com/research/reta/solubility-reconstitution) --- BPC-157 (Arg-Salt) URL: https://nexpep.com/research/bpc-157 - Mechanism of Angiogenesis Enhancement: Investigation into the VEGFR2 activation pathway used by BPC-157 to promote capillary formation. (https://nexpep.com/research/bpc-157/angiogenesis-mechanism) - Stability in Gastric Juice (pH 3.0): Comparative stability analysis of BPC-157 Arg-Salt vs Acetate Salt in acidic environments. (https://nexpep.com/research/bpc-157/stability-gastric-juice)