FOR RESEARCH USE ONLY. Not for human consumption. Independent directory — we do not sell peptides.
WorkspacePeptide merchant directory
Peptide merchant directory.
Independent information for a more informed research process.
SOURCE-LINKED DIRECTORY
Research suppliers, in one place.
An initial index of 13 potential suppliers. Not an exhaustive market list, ranking, or endorsement.
13listed merchants
Services are summarized from company websites, checked November 14, 2026. Independent quality, batch COAs, pricing, shipping, and current availability have not been verified. No independently reviewed comparison offers are published.
13 of 13 merchants
Not independently reviewed
AmbioPharm
ambiopharm.com
Custom peptide API development and manufacturing for pharmaceutical and biotech projects.
Strengths
AmbioPharm describes peptide development, manufacturing, and analytical services for research through commercial supply.
Cautions
Project pricing, batch-specific evidence, and detailed purchasing eligibility are not provided.
AI-assisted summary of company sources · not verification
Manufacturing & development
Not independently reviewed
AnaSpec
anaspec.com
Catalog peptides, custom peptide services, and peptide manufacturing.
The supplied page provides no project prices, batch-specific evidence, or detailed buyer eligibility.
AI-assisted summary of company sources · not verification
Custom synthesis
Not independently reviewed
GenScript
genscript.com
Custom peptide synthesis with modification and analytical service options.
Strengths
GenScript advertises custom peptide synthesis with over 300 modifications and optional analytical services.
Cautions
Fast-turnaround guarantees have sequence and service restrictions, shipping is excluded, and project pricing and batch evidence are not supplied.
AI-assisted summary of company sources · not verification
Custom synthesis
Not independently reviewed
JPT Peptide Technologies
jpt.com
Peptide pools, libraries, microarrays, and custom peptide technologies.
Strengths
JPT describes custom peptides, pools, libraries, and microarrays across several synthesis scales.
Cautions
Selected catalog prices do not establish custom-project costs, and batch evidence and detailed buyer eligibility are not supplied.
AI-assisted summary of company sources · not verification
Catalog & synthesis
Not independently reviewed
LifeTein
lifetein.com
Custom peptide synthesis, labeled peptides, and peptide modifications.
Strengths
The supplied summary describes custom peptide synthesis, labeled peptides, and peptide modifications.
Cautions
The source page was not re-read, so pricing, batch evidence, and buyer eligibility remain unknown.
AI-assisted summary of company sources · not verification
Custom synthesis
Not independently reviewed
MedChemExpress
medchemexpress.com
Custom peptide synthesis, peptide libraries, and modification services.
Strengths
The supplied summary describes custom peptide synthesis, peptide libraries, and modification services.
Cautions
The source page was not re-read, so pricing, batch evidence, and buyer eligibility remain unknown.
AI-assisted summary of company sources · not verification
Custom synthesis
Not independently reviewed
PolyPeptide Group
polypeptide.com
Peptide API development and manufacturing for pharmaceutical and biotech companies.
Strengths
PolyPeptide describes development and manufacturing of proprietary and generic peptide ingredients for pharmaceutical and biotech companies.
Cautions
The supplied page provides no project pricing, batch-specific evidence, or detailed buyer eligibility.
AI-assisted summary of company sources · not verification
Manufacturing & development
Not independently reviewed
Tocris Bioscience
tocris.com
Catalog of research peptides organized by biological target and research application.
Strengths
The supplied summary describes research peptides organized by biological target and research application.
Cautions
The source page was not re-read, so pricing, batch evidence, and buyer eligibility remain unknown.
AI-assisted summary of company sources · not verification
Catalog peptides
Alphabetical ordering is not a recommendation. No affiliate tracking is added to these source links. Manufacturing and custom-synthesis companies may serve institutional buyers only.
Other places to find suppliers
Biocompare lists custom peptide synthesis services with supplier comparisons and information requests. It includes sponsored listings; inclusion is not independent quality verification.
External directory · laboratory services, not a pharmacy. Confirm current products, documentation, buyer eligibility, and local restrictions with each supplier.