Compound GuideNootropic & CNS
Dihexa Research Guide: Structure, HGF/c-Met Mechanism, and Evidence Limits
A retraction-aware guide to Dihexa identity, the proposed HGF/MET mechanism, mixed preclinical findings, and unresolved evidence gaps.
Apex Laboratory · Research Library
Peptide Research Library
Explore 62 evidence-led guides across six research hubs and a dedicated lab-methods track. Each guide is written for research-use-only context, source checking, and clearer comparison.
62Research guides
6Research hubs
RUOResearch-use context
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Six research hubs
Use a curated hub for a guided pathway, or filter every guide below.
Tissue Repair Research
Identity, mechanisms, evidence limits, and study-design context.
GLP-1 & Metabolic Research
Agonist classes, molecular design, comparison guides, and evidence status.
Growth Hormone Axis
GHRH analogs, secretagogues, receptor pathways, and evidence boundaries.
Nootropic & CNS Research
Identity-led guides for neuroactive research compounds and comparisons.
Longevity & Bioregulators
Mitochondrial, peptide-regulation, and aging-pathway research coverage.
Specialty Research
Research compounds that sit outside the library’s core pathway families.
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Showing 62 of 62 guides.
Compound GuideTissue Repair
KLOW vs GLOW vs BPC-157/TB-500 Blend: Component-Level Research Comparison
A research-grade component-level comparison of three tissue-repair peptide blends — the BPC-157/TB-500 repair core, GLOW with added GHK-Cu, and KLOW with added KPV — synthesized…
Compound GuideGrowth Hormone Axis
GHRP-2 vs GHRP-6 vs Hexarelin: Growth Hormone Secretagogue Comparison
A criteria-first comparison of GHRP-2, GHRP-6, and Hexarelin that separates direct evidence, receptor systems, model differences, and unresolved questions.
Compound GuideTissue Repair
LL-37 Research Guide: Mechanisms, Evidence, and Trial Limits
An evidence-graded guide to endogenous LL-37, membrane and immune research, mixed topical-trial findings, and controls for synthetic research reagents.
Compound GuideGrowth Hormone Axis
PEG-MGF Research Guide: What the Evidence Actually Studies
An evidence-lane guide that keeps native IGF1 splice-variant and unmodified E-peptide findings separate from the supplier-defined PEG-MGF construct.
Compound GuideLongevity & Bioregulators
FOXO4-DRI Research Guide: D-Retro-Inverso Design and Evidence
An evidence-scoped FOXO4-DRI guide covering D-retro-inverso design, the Baar FOXO4-p53 model, direct preclinical findings, and the human-evidence boundary.
Compound GuideNootropic & CNS
Adamax Explained: Naming, Identity Claims, and Evidence Gaps
A source-ranked explainer of the conflicting identities used under the Adamax name, the direct-evidence gap, and the limits of Semax comparisons.
Compound GuideGLP-1 / Metabolic
Cagrilintide and CagriSema Research Guide
An evidence-led guide to cagrilintide and CagriSema, including molecular identity, amylin and GLP-1 rationale, clinical trials, result interpretation, and regulatory status.
Compound GuideGLP-1 / Metabolic
Mazdutide Research Guide: Dual Agonism, Trials, and 2026 Status
An evidence-led mazdutide guide covering dual GLP-1/glucagon pharmacology, GLORY-1 and DREAMS results, China approvals, comparison boundaries, and RUO material context.
Compound GuideGLP-1 / Metabolic
Survodutide Research Guide: Dual GCGR/GLP-1R Evidence
An evidence-scoped Survodutide guide covering BI 456906 identity, dual GCGR/GLP-1R biology, obesity and MASH evidence, and current development status.
Compound GuideGLP-1 / Metabolic
Retatrutide TRIUMPH-1 Phase 3 Results: What the 2026 Data Show
A source-dated explanation of TRIUMPH-1 design, week 80 retatrutide results, estimands, extension limits, safety signals, and regulatory status.
Compound GuideSpecialty Research
Thymosin Alpha-1: Research-Grade Peptide Guide
A research-grade overview of thymosin alpha-1, the 28-amino-acid thymic immunomodulatory peptide: Goldstein-lineage discovery, Toll-like-receptor mechanism, antiviral and sepsis research, and reagent verification.
Compound GuideGLP-1 / Metabolic
Liraglutide vs Dulaglutide: Structure, Pharmacology, and AWARD-6 Evidence
An evidence-led comparison of Liraglutide C16 acylation and Dulaglutide Fc-fusion engineering, the direct AWARD-6 trial, distinct evidence programs, and current regulatory identities.
Compound GuideLongevity & Bioregulators
SS-31 (Elamipretide) Research Guide: Cardiolipin and FDA Status
An evidence-scoped SS-31 guide covering elamipretide identity, cardiolipin biology, preclinical and trial results, and current FORZINITY FDA status.
Compound GuideGLP-1 / Metabolic
5-Amino-1MQ Research Guide: NNMT Evidence, Mechanism, and Limits
An evidence-scoped guide to 5-Amino-1MQ identity, NNMT biology, direct cell and mouse studies, human evidence gaps, and research-grade documentation.
Compound GuideTissue Repair
KPV Peptide Research Guide: Identity, Mechanisms, Evidence, and Limits
An evidence-scoped KPV peptide guide covering Lys-Pro-Val identity, alpha-MSH lineage, model-specific mechanisms, preclinical findings, human evidence gaps, and analytical verification.
Compound GuideGLP-1 / Metabolic
SLU-PP-332 Research Guide: A Pan-ERR Agonist
An evidence-led guide to SLU-PP-332 as a small-molecule pan-ERR chemical probe, with model-specific findings and a symmetric SLU-PP-915 comparison.
Compound GuideGLP-1 / Metabolic
Next-Generation GLP-1 Research: Classes, Evidence, and 2026 Status
A source-dated landscape of next-generation GLP-1 research architectures, evidence lanes, program status, and molecule-specific guide handoffs.
Compound GuideSpecialty Research
Triptorelin Research Guide: GnRH Agonism, Desensitization & Evidence
A source-led Triptorelin guide covering technical identity, pulse-versus-continuous GnRH signaling, evidence boundaries, approved-formulation distinctions, and analytical verification.
Compound GuideGrowth Hormone Axis
IGF-1 LR3 Research Guide: Structure, IGFBP Design, and Direct Evidence
An evidence-scoped Long R3 IGF-I guide covering 83-residue identity, reduced IGFBP affinity, direct model findings, and boundaries with native IGF-1, MGF, and mecasermin.
Compound GuideLongevity & Bioregulators
MOTS-c Research Guide: MT-RNR1, Mechanisms, and Evidence
An evidence-scoped MOTS-c guide covering its 16-residue identity, correct MT-RNR1 locus, AMPK and nuclear-signaling studies, human evidence, and unresolved trial outcomes.
Compound GuideGrowth Hormone Axis
Tesamorelin Research Guide: Stabilized GHRH(1-44) Analog
A research-grade profile of tesamorelin, the stabilized GHRH(1-44) analog: trans-3-hexenoyl modification, GHRH-receptor mechanism, pharmacokinetics, and how it differs from sermorelin.
Pillar GuideGrowth Hormone Axis
Sermorelin Research Guide: GHRH(1-29), Mechanism, and Geref History
An evidence-scoped Sermorelin guide covering GHRH(1-29)-NH2 identity, GHRHR signaling, rat pharmacokinetic limits, Geref history, and lot-level verification.
Pillar GuideGLP-1 / Metabolic
Semaglutide Research Guide: Molecular Design, GLP-1R Mechanism & Evidence
An evidence-led Semaglutide research guide covering molecular design, selective GLP-1 receptor mechanism, SUSTAIN, PIONEER, STEP, SELECT, and the U.S. FDA record through March 2026.
Comparison GuideGLP-1 / Metabolic
Semaglutide vs Tirzepatide vs Retatrutide: Single, Dual, and Triple Agonists Compared
A symmetric semaglutide, tirzepatide, and retatrutide comparison covering single, dual, and triple receptor architecture, direct evidence, cross-trial limits, and July 2026 status.
Comparison GuideTissue Repair
BPC-157 vs GHK-Cu: Evidence and Research Design
A symmetric BPC-157 and GHK-Cu comparison covering chemical identity, evidence lanes, mechanism limits, human-evidence gaps, and research-design controls.
Comparison GuideGrowth Hormone Axis
Ipamorelin vs CJC-1295: Receptors, Evidence, and DAC Naming
A source-matched Ipamorelin-versus-CJC-1295 comparison covering receptor identity, compound-specific evidence, DAC naming, and direct-study gaps.
Comparison GuideGrowth Hormone Axis
Tesamorelin vs Sermorelin: GHRH Analog Comparison
A symmetric Tesamorelin-versus-Sermorelin comparison covering identity, shared GHRHR signaling, FDA histories, evidence differences, and research-design fit.
Pillar GuideSpecialty Research
PT-141 / Bremelanotide Research Guide
A source-led guide to PT-141 identity, Arizona melanocortin lineage, FDA-aligned nonselective receptor language, and Vyleesi separation.
Pillar GuideLongevity & Bioregulators
NAD+ Research Guide: Coenzyme Biology, Precursors, and Evidence
An evidence-scoped NAD+ guide separating coenzyme biology, age-related mechanisms, NR and NMN precursor trials, and limited direct NAD+ human research.
Pillar GuideSpecialty Research
Specialty Research Peptides: Families, Evidence, and Research Guide
A concise map of specialty research peptide families, evidence depth, regulatory boundaries, and the exact Apex guides that own each compound question.
Pillar GuideLongevity & Bioregulators
Longevity & Bioregulator Research Peptides: Evidence Guide
A source-led map of longevity and bioregulator research lanes, exact material identity, evidence maturity, and current SS-31 regulatory context.
Pillar GuideLab Methods
Peptide Mass Spectrometry: What It Verifies and What It Does Not
An evidence-led guide to peptide mass spectrometry, charge states, intact-mass and MS/MS interpretation, method limits, and orthogonal verification.
Pillar GuideLab Methods
Why 99% Purity Matters in Research Peptides
A method-aware explanation of HPLC area percent, orthogonal identity evidence, the unresolved 1%, and lot-specific COA review.
Educational GuideLab Methods
Research Grade vs Pharmaceutical Grade: What the Labels Actually Mean
A primary-source framework for separating RUO reagents, APIs, compounded drugs, and approved finished products—and auditing what quality evidence proves.
Educational GuideLab Methods
How to Evaluate a Peptide Vendor: A Researcher’s 5-Step Checklist
A vendor-neutral five-step framework for evaluating peptide suppliers through material scope, lot traceability, identity evidence, method-qualified purity, and a documented disposition.
Pillar GuideGrowth Hormone Axis
Growth Hormone Peptides: GHRH Analogs & Secretagogues
A source-led map of growth hormone peptides, receptor families, evidence layers, regulatory boundaries, and the Apex guides that own each research question.
Comparison GuideGLP-1 / Metabolic
Retatrutide vs Tirzepatide: Mechanism, Evidence, and Approval Status
A current Retatrutide-versus-Tirzepatide comparison covering receptor scope, evidence maturity, FDA status, and the pending TRIUMPH-5 head-to-head study.
Pillar GuideGLP-1 / Metabolic
Tirzepatide Research Guide: GIP/GLP-1 Pharmacology and FDA Status
An evidence-scoped Tirzepatide guide covering GIPR/GLP-1R pharmacology, representative SURPASS and SURMOUNT research, and current FDA formulation boundaries.
Pillar GuideGLP-1 / Metabolic
GLP-1 / Metabolic Research Peptides: Family and Evidence Guide
An evidence-led map of GLP-1 mono-agonists, dual and triple agonists, GLP-1/glucagon programs, amylin combinations, and adjacent metabolic tools.
Pillar GuideTissue Repair
Tissue Repair Research Peptides: Evidence & Identity Guide
A source-led map of tissue-repair research peptides, exact identity boundaries, evidence maturity, and current SS-31 regulatory context.
Comparison GuideTissue Repair
BPC-157 vs TB-500: Mechanism & Research Comparison
Side-by-side research comparison of BPC-157 and TB-500 — mechanism scales, structural differences, half-life, and combination research context with verified PubMed citations.
Pillar GuideNootropic & CNS
Cerebrolysin Research Guide: Mixture, Evidence, and Regulatory Status
Cerebrolysin research guide covering the porcine-brain peptide-and-amino-acid mixture's neurotrophic-factor-like mechanism, published clinical trial data, and pharmacokinetic profile from decades of research.
Pillar GuideNootropic & CNS
Nootropic & CNS Research Peptides: Identity and Evidence Guide
A source-led taxonomy of eight CNS research materials, their exact identity classes, evidence ownership, BBB limits, and regulatory boundaries.
Comparison GuideGrowth Hormone Axis
Sermorelin vs CJC-1295: Identity, Evidence, and GHRH Pharmacology
A source-matched Sermorelin-versus-CJC-1295 comparison covering identity, shared GHRHR signaling, DAC nomenclature, evidence boundaries, and Geref history.
Pillar GuideNootropic & CNS
Selank vs Semax Research Guide: Differences, Evidence, and Limits
An evidence-scoped Selank versus Semax guide comparing sequence, research mechanisms, models, direct human observations, analytical verification, and unresolved claims.
Pillar GuideTissue Repair
GHK-Cu Research Guide: Identity, Evidence, and Study Controls
An evidence-graded guide to GHK versus GHK-Cu, model-specific findings, human-evidence limits, and the controls needed for a defensible reagent study.
Pillar GuideLongevity & Bioregulators
Epithalon (Epitalon) Research Guide: Telomerase Evidence and Limits
An evidence-graded Epithalon guide covering AEDG identity, Khavinson-program source concentration, telomerase and cell-line findings, animal models, and the unresolved human-longevity tier.
Pillar GuideSpecialty Research
Melanotan II Research Guide: Identity, Receptors, and Evidence
A source-calibrated Melanotan II research guide covering exact identity, melanocortin receptor pharmacology, Arizona lineage, and related-drug boundaries.
Pillar GuideGLP-1 / Metabolic
AOD9604 Research Guide: Identity, Evidence, and Human Limits
Comprehensive research guide to AOD9604, the modified human growth hormone fragment 176-191. CAS 221231-10-3, MW 1815.08 g/mol. Lipolytic mechanism without IGF-1 stimulation, published metabolic data,…
Pillar GuideGrowth Hormone Axis
CJC-1295 With DAC vs No DAC: An Identity-First Research Guide
An identity-first comparison that keeps CJC-1295 DAC pharmacokinetics separate from Modified GRF 1-29 and maps each finding to its tested construct.
Pillar GuideGrowth Hormone Axis
Ipamorelin Research Guide: The Selective Growth Hormone Secretagogue
A source-led Ipamorelin guide covering technical identity, GHS-R1a pharmacology, selectivity evidence, human PK/PD limits, FDA status, and assay boundaries.
Pillar GuideGLP-1 / Metabolic
Retatrutide: The Triple Agonist Peptide — Mechanism, Phase 2 Data & Research Applications
Comprehensive Retatrutide (LY3437943) guide covering GIP/GLP-1/glucagon triple-receptor pharmacology, peer-reviewed Phase 2 evidence, July 2026 Phase 3 status, comparisons, limitations, and research-material verification.
Pillar GuideTissue Repair
TB-500 Research Guide: Fragment Identity and Evidence Limits
A material-first guide to seven-residue Ac-LKKTETQ, its distinction from full-length thymosin beta-4, evidence-attribution limits, and study controls.
Lab MethodLab Methods
Peptide Concentration and Volume Calculation Guide
Checked laboratory formulas for concentration, aliquot volume, unit conversion, U-100 label and graduation limits, and calculation error control.
Pillar GuideLab Methods
HPLC Testing for Peptide Purity: How to Read Results and Their Limits
A method-focused guide to peptide HPLC chromatograms, area percentages, integration decisions, system suitability, and orthogonal mass evidence.
Pillar GuideLab Methods
What Is Bacteriostatic Water? Composition, Storage, and Sterile Water Comparison
A source-scoped guide to bacteriostatic water composition, storage labels, solvent differences, and research-protocol decisions.
Lab MethodLab Methods
How to Read a Peptide Certificate of Analysis (COA)
A method-neutral workflow for reading peptide certificates of analysis, including traceability, HPLC area percentage, mass spectrometry, specifications, laboratory competence, and red flags.
Lab MethodLab Methods
Peptide Storage Guide: State, Stability, and Handling
A state-first peptide storage framework covering source precedence, environmental risks, documentation, excursions, and defensible stop conditions.
Comparison GuideGLP-1 / Metabolic
Semaglutide vs Tirzepatide: Mechanism and Head-to-Head Evidence
A symmetric semaglutide-versus-tirzepatide comparison covering receptor design, SURPASS-2 and SURMOUNT-5, evidence limits, and regulatory identity.
Pillar GuideTissue Repair
BPC-157 Research Guide: Identity, Mechanisms, Evidence, and Limits
An evidence-scoped BPC-157 research guide covering chemical identity, model-specific mechanisms, preclinical findings, human evidence limits, and analytical verification.
Lab MethodLab Methods
How to Reconstitute Peptides for Laboratory Research
Research-only steps for verifying a lyophilized peptide, selecting a compatible solvent, calculating stock concentration, and documenting the result.
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