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Find GMP, contract, and API peptide manufacturers. Verified manufacturing facilities listed on The Peptide Alliance.

Bachem Americas

95/100

US subsidiary of Swiss-based Bachem Holding, a global leader in peptide chemistry. FDA-registered and GMP-compliant. Provides full-service CDMO capabilities from process development to large-scale commercial API production.

Torrance, CA (US)National
Manufacturers

AnaSpec

85/100

Leading biotech CMO with 30+ years of peptide manufacturing experience. 44,000 sq ft facility in California's Silicon Valley. Manufactures custom GMP peptides and dyes for diagnostics, biopharmaceuticals, and cosmetics.

Fremont, CA (US)National
Manufacturers

CPC Scientific

85/100

CDMO specializing in large-scale, late-phase, and commercial GMP peptide and oligonucleotide manufacturing. Annual peptide API production capacity exceeds 1,000 kg. Serves clinical and commercial pharmaceutical clients.

Rocklin, CA (US)National
Manufacturers

CreoSalus

80/100

Multi-division life sciences company offering full-service cGMP contract manufacturing of peptide drug substances (API) and sterile injectable drug products. Produces hundreds of API peptides monthly.

Louisville, KY (US)National
Manufacturers

PolyPeptide Group

92/100

Global GMP peptide CDMO with North American headquarters in Torrance, CA. One of the world's largest dedicated peptide manufacturers. Specializes in peptide API manufacturing from Phase I through commercial scale.

Torrance, CA (US)National
Manufacturers

Almac Sciences

88/100

Pharmaceutical CDMO with a Souderton, PA facility specializing in complex API synthesis including peptides. Offers integrated drug substance and drug product manufacturing with GMP compliance from Phase I to commercial.

Souderton, PA (US)National
Manufacturers

Asymchem

88/100

Global pharmaceutical CDMO with a Morrisville, NC facility providing integrated process development and manufacturing of peptide APIs and complex molecules. FDA-inspected GMP facility serving biopharma clients.

Morrisville, NC (US)National
Manufacturers

ChemPep

78/100

Florida-based peptide manufacturer offering custom peptide synthesis, SPPS resin beads, protected amino acids, and peptide coupling reagents. Serves pharmaceutical, biotechnology, and research sectors globally.

Wellington, FL (US)National
Manufacturers

Peptide International

80/100

Louisville-based manufacturer supplying high-purity research-grade peptides, Fmoc amino acids, resins, and peptide synthesis reagents to academic and industrial researchers worldwide since 1994.

Louisville, KY (US)National
Manufacturers

Lonza Peptides

92/100

US division of global pharma CDMO Lonza Group. New Hampshire facility specializes in large-scale GMP peptide and oligonucleotide manufacturing for clinical and commercial drug products. FDA-inspected, ISO-certified.

Portsmouth, NH (US)National
Manufacturers

Abzena

85/100

Integrated biologics and peptide CDMO with San Diego bioconjugation facilities. Offers end-to-end pharmaceutical development and manufacturing services including custom peptide-drug conjugate production for biopharma.

San Diego, CA (US)National
Manufacturers

ImprimisRx

80/100

San Diego-based 503B outsourcing facility offering compounded ophthalmology, urology, and specialty medications including peptide-based preparations. FDA-registered, PCAB-accredited, and ships nationally to healthcare providers.

San Diego, CA (US)National
Manufacturers