Company lists · Data refreshed September 2026
Top 25 Peptide manufacturers based in the United States
RevenueBase identified 245 peptide manufacturers headquartered in the United States as of September 2026 and tracks 3,351 professional contacts across them, including 1,200 with verified work emails. San Diego is the largest hub.
This list covers peptide manufacturers headquartered in the United States, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 17, 2026.
Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.
The 25 largest peptide manufacturers based in the United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 174 contacts → | ||||
Partial evidence “AmbioPharm is a global custom synthetic peptide CDMO founded in 2005 and headquartered in North Augusta, South Carolina, USA specializing in developing highly efficient…” Source: RevenueBase Database · checked Sep 17, 2026Thanks. The Data Team will review it. | |||||
| 2 | 166 contacts → | ||||
Indirect evidence “For more than 45 years, Enzo Biochem has been a leader in innovation and product development to support a diverse range of needs in biomedical research and healthcare.” Source: RevenueBase Database · checked Sep 17, 2026Thanks. The Data Team will review it. | |||||
| 3 | 151 contacts → | ||||
Indirect evidence “ACROBiosystems Group, founded in 2010 and listed in 2021, is a biotechnology company aimed at being a cornerstone of the global biopharmaceutical and health industries by…” Source: RevenueBase Database · checked Sep 17, 2026Thanks. The Data Team will review it. | |||||
| 4 | 140 contacts → | ||||
Indirect evidence “Vector Laboratories serves and partners with scientists and industry teams developing the next generation of diagnostics, therapeutics, and biological insights.” Source: RevenueBase Database · checked Sep 17, 2026Thanks. The Data Team will review it. | |||||
| 5 | 136 contacts → | ||||
Partial evidence “Protagonist Therapeutics (Nasdaq: PTGX) is a biopharmaceutical company with a proprietary technology platform focused on discovering and developing peptide-based new chemical…” Source: RevenueBase Database · checked Sep 17, 2026Thanks. The Data Team will review it. | |||||
| 6 | 122 contacts → | ||||
Indirect evidence “MedChemExpress (MCE) is a leading global supplier of life science reagents, dedicated to providing innovative solutions for scientific research and drug development.” Source: RevenueBase Database · checked Sep 17, 2026Thanks. The Data Team will review it. | |||||
| 7 | 106 contacts → | ||||
Indirect evidence “Discover the World of LAMPIRE Biological Laboratories!” Source: RevenueBase Database · checked Sep 17, 2026Thanks. The Data Team will review it. | |||||
| 8 | 105 contacts → | ||||
Partial evidence “Meridian LIfe Science is a leading large-scale manufacturer of antibodies, viral antigens, recombinant proteins, blockers, PCR enzymes, nucleotides, and critical assay reagents.” Source: RevenueBase Database · checked Sep 17, 2026Thanks. The Data Team will review it. | |||||
| 9 | 104 contacts → | ||||
Indirect evidence “Scientific Protein Laboratories (SPL) has been a leading global supplier of high quality active pharmaceutical ingredients (APIs) for over three decades.” Source: RevenueBase Database · checked Sep 17, 2026Thanks. The Data Team will review it. | |||||
| 10 | 96 contacts → | ||||
Strong evidence “AnaSpec, a subsidiary of Kaneka Eurogentec, is a globally recognized biotechnology company that manufactures and sells custom and catalog Peptides, Fluorogenic and FRET Assay…” Source: RevenueBase Database · checked Sep 17, 2026Thanks. The Data Team will review it. | |||||
| 11 | 95 contacts → | ||||
Partial evidence “Nitta Gelatin is one of the world’s leading manufacturers of gelatin and collagen related products.” Source: RevenueBase Database · checked Sep 17, 2026Thanks. The Data Team will review it. | |||||
| 12 | 76 contacts → | ||||
Partial evidence “CSBio is a leading peptide and peptide synthesizer manufacturing company located in Silicon Valley, California.” Source: RevenueBase Database · checked Sep 17, 2026Thanks. The Data Team will review it. | |||||
| 13 | 73 contacts → | ||||
Partial evidence “Evolved By Nature, pioneers in natural peptide discovery.” Source: RevenueBase Database · checked Sep 17, 2026Thanks. The Data Team will review it. | |||||
| 14 | 71 contacts → | ||||
Indirect evidence “Antheia is the advanced biosynthesis company transforming pharmaceutical manufacturing and innovation for the 21st century.” Source: RevenueBase Database · checked Sep 17, 2026Thanks. The Data Team will review it. | |||||
| 15 | 63 contacts → | ||||
Indirect evidence “RayBiotech is a leading life sciences company providing proteomic discovery tools to scientists in 85 countries worldwide.” Source: RevenueBase Database · checked Sep 17, 2026Thanks. The Data Team will review it. | |||||
| 16 | 50 contacts → | ||||
Indirect evidence “Prolytix, formerly Haematologic Technologies, has 30+ years of experience in protein chemistry, which ensures our team will identify and solve the challenges of your large…” Source: RevenueBase Database · checked Sep 17, 2026Thanks. The Data Team will review it. | |||||
| 17 | 49 contacts → | ||||
Indirect evidence “3-D Matrix, North America, based in Newton, Massachusetts, is a wholly owned subsidiary of 3-D Matrix, Ltd, Tokyo, Japan.” Source: RevenueBase Database · checked Sep 17, 2026Thanks. The Data Team will review it. | |||||
| 18 | 43 contacts → | ||||
Strong evidence “Bio-Synthesis is a biology contract manufacturer of high-quality nucleic acids, peptides and other molecular biology products for the research, diagnostic and therapeutic…” Source: RevenueBase Database · checked Sep 17, 2026Thanks. The Data Team will review it. | |||||
| 19 | 42 contacts → | ||||
Indirect evidence “G-Biosciences is an ISO 9001:2015 and ISO 13485:2016 certified, cGMP, FDA.QSR (21 CFR 820) compliant life sciences laboratory and manufacturing facility with experience in…” Source: RevenueBase Database · checked Sep 17, 2026Thanks. The Data Team will review it. | |||||
| 20 | 36 contacts → | ||||
Indirect evidence “Kemp Proteins, LLC (formerly Kempbio) is a privately-owned, USA-based contract research and manufacturing organization located in Frederick, MD.” Source: RevenueBase Database · checked Sep 17, 2026Thanks. The Data Team will review it. | |||||
| 21 | 36 contacts → | ||||
Indirect evidence “Worthington is a privately owned, ISO9001 Certified.” Source: RevenueBase Database · checked Sep 17, 2026Thanks. The Data Team will review it. | |||||
| 22 | 35 contacts → | ||||
Indirect evidence “With 25 years of experience, CPC Scientific is a globally recognized Contract Research, Development, and Manufacturing Organization (CRDMO) that specializes in synthetic GMP…” Source: RevenueBase Database · checked Sep 17, 2026Thanks. The Data Team will review it. | |||||
| 23 | 30 contacts → | ||||
Partial evidence “Since its founding in 1992, bioWORLD has established, maintained, and succeeded in its core mission to manufacture and supply high-quality molecular tools, biological reagents…” Source: RevenueBase Database · checked Sep 17, 2026Thanks. The Data Team will review it. | |||||
| 24 | 28 contacts → | ||||
Indirect evidence “At Sapience, we think boldly about the possibilities for treating cancer.” Source: RevenueBase Database · checked Sep 17, 2026Thanks. The Data Team will review it. | |||||
| 25 | 28 contacts → | ||||
Indirect evidence “AmBeed is a trusted supplier of high-quality research chemicals and life sciences reagents, supporting scientists and pharmaceutical innovators worldwide.” Source: RevenueBase Database · checked Sep 17, 2026Thanks. The Data Team will review it. | |||||
RevenueBase Smart Search
RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: peptide manufacturers. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.
- Strong evidence
- The company's own public description of its business names peptide manufacturers.
- Partial evidence
- Its own public description names part of peptide manufacturers, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name peptide manufacturers. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.
RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.
Showing 25 of 245 peptide manufacturers based in the United States
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Peptide manufacturers based in the United States at a glance
As of Sep 17, 2026Companies by employee count
Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 245 companies.
How this list was built
Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among peptide manufacturers, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.
- Source
- The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
- What qualifies
- Companies headquartered in the United States whose own description of what they do matches “peptide manufacturers”. Matching reads each company's description, not its industry code or its name.
- RevenueBase Smart Search
- RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names peptide manufacturers), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
- What we exclude
- Companies whose own description does not clearly place them among peptide manufacturers, and records with no verified work email. Companies headquartered outside United States are excluded even when they keep an office there.
- Match quality
- In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
- Ranking
- Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
- Verification
- Every listed company carries at least one verified work email, 1,200 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
- Refresh
- This page's figures were pulled from the company graph on September 17, 2026. Lists refresh periodically as the graph is re-checked.
- Corrections
- Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.
Frequently asked
What is RevenueBase Smart Search?
RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names peptide manufacturers, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.
How many peptide manufacturers are there based in the United States?
RevenueBase identified 245 peptide manufacturers headquartered in the United States as of September 2026, matched on each company's own description of what it does rather than its industry code.
What is the largest company on this list?
Ambiopharm, headquartered in North Augusta, tops this list with the largest team on record.
Which city has the most peptide manufacturers?
San Diego leads with 20 headquartered companies, followed by Boston (7) and Louisville (6).
How do I get contact information for these companies?
A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 1,200 verified decision-maker contacts tracked across these 245 companies.
How current is this list?
The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 17, 2026.
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About this data
RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase Smart Search, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.
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