Company lists · Data refreshed September 2026

Top 25 Apis and intermediates producers based in the United States

Name: Apis and intermediates producers based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 19, 2026 587 companies tracked

RevenueBase identified 587 apis and intermediates producers headquartered in the United States as of September 2026 and tracks 25,728 professional contacts across them, including 7,712 with verified work emails. San Diego is the largest hub.

This list covers apis and intermediates producers 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 19, 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.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 19, 2026 86% judged on-target in blind review

587Companies

25,728Contacts tracked

7,712Verified emails

Explore this list → Free signup · no credit card · 500 free credits

The 25 largest apis and intermediates producers based in the United States

Ranked by team size

Top 25 of 587 apis and intermediates producers based in the United States, ranked by team size, largest first. Data refreshed Sep 19, 2026. RevenueBase Smart Search rates how each company's information relates to apis and intermediates producers: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	W. R. Grace	Indirect evidence	Columbia, MD, United StatesHQ checked Sep 19, 2026	1,001-5,000	3,982 contacts →
	Indirect evidence “Grace, a Standard Industries company, is a leading global supplier of specialty chemicals and solutions that enable industries to enhance modern life.” Source: RevenueBase Database · checked Sep 19, 2026
2	Cambrex	Indirect evidence	East Rutherford, NJ, United StatesHQ checked Sep 19, 2026	1,001-5,000	1,294 contacts →
	Indirect evidence “Cambrex is a leading global contract development and manufacturing organization (CDMO) that provides drug substance development and manufacturing across the entire drug lifecycle…” Source: RevenueBase Database · checked Sep 19, 2026
3	Vantage Specialty Chemicals	Indirect evidence	Deerfield, IL, United StatesHQ checked Sep 19, 2026	501-1,000	742 contacts →
	Indirect evidence “Vantage delivers natural solutions that enhance our customers' technical performance and marketing success.” Source: RevenueBase Database · checked Sep 19, 2026
4	Veranova	Partial evidence	Devens, MA, United StatesHQ checked Sep 19, 2026	501-1,000	574 contacts →
	Partial evidence “Veranova is a global leader in process development and manufacturing of active pharmaceutical ingredients (APIs), with a focus on specialty and complex chemistry for small…” Source: RevenueBase Database · checked Sep 19, 2026
5	SK Pharmteco	Indirect evidence	Rancho Cordova, CA, United StatesHQ checked Sep 19, 2026	1,001-5,000	540 contacts →
	Indirect evidence “Established in 2019 by SK Inc, SK pharmteco is a global contract development and manufacturing organization (CDMO) with operations across the U.S, Europe, and South Korea.” Source: RevenueBase Database · checked Sep 19, 2026
6	PVS Chemicals	Indirect evidence	Detroit, MI, United StatesHQ checked Sep 19, 2026	1,001-5,000	480 contacts →
	Indirect evidence “PVS Chemicals enables our world through the safe and reliable delivery of chemistry, either created by us or sourced from partners.” Source: RevenueBase Database · checked Sep 19, 2026
7	Kaneka North America	Partial evidence	New York, NY, United StatesHQ checked Sep 19, 2026	5,001-10,000	306 contacts →
	Partial evidence “Kaneka Corporation of Osaka, Japan is a $5 billion* producer of chemical products including resins, pharmaceutical intermediaries, food supplements, synthetic fibers, and fine…” Source: RevenueBase Database · checked Sep 19, 2026
8	SPI Pharma	Indirect evidence	Wilmington, DE, United StatesHQ checked Sep 19, 2026	201-500	304 contacts →
	Indirect evidence “For over 75 years, we have supplied the pharmaceutical industry with highly engineered products and innovative solutions that improve the formulation and delivery of drug products…” Source: RevenueBase Database · checked Sep 19, 2026
9	Astra Zeneca LP US	Indirect evidence	Wilmington, DE, United StatesHQ checked Sep 19, 2026	10001+	273 contacts →
	Indirect evidence “Astra Zeneca LP Us is a Pharmaceuticals company located in 1800 Concord Pike, Wilmington, Delaware, United States.” Source: RevenueBase Database · checked Sep 19, 2026
10	Jost Chemical	Indirect evidence	Saint Louis, MO, United StatesHQ checked Sep 19, 2026	201-500	259 contacts →
	Indirect evidence “Jost Chemical Co.” Source: RevenueBase Database · checked Sep 19, 2026
11	MSN Pharmaceuticals INC	Indirect evidence	Piscataway, NJ, United StatesHQ checked Sep 19, 2026	51-200	257 contacts →
	Indirect evidence “MSN Pharmaceuticals Inc.(MSNPI), a fully owned subsidiary of MSN Group of Companies, is one of the fast-emerging Finished Dosages manufacturers of USA.” Source: RevenueBase Database · checked Sep 19, 2026
12	Olon USA	Indirect evidence	Concord, OH, United StatesHQ checked Sep 19, 2026	51-200	237 contacts →
	Indirect evidence “Who we are: On June 9, 2017, Olon S.p.A, a leading Active Pharmaceutical Ingredients (API) contract development and manufacturing organization (CDMO) and Generics supplier…” Source: RevenueBase Database · checked Sep 19, 2026
13	Spectrum Chemical Mfg. Corp	Indirect evidence	New Brunswick, NJ, United StatesHQ checked Sep 19, 2026	201-500	232 contacts →
	Indirect evidence “Spectrum Chemical Mfg.” Source: RevenueBase Database · checked Sep 19, 2026
14	Halo Pharmaceutical, INC	Indirect evidence	Whippany, NJ, United StatesHQ checked Sep 19, 2026	201-500	219 contacts →
	Indirect evidence “Halo Pharma is a leading provider of pharmaceutical services, including contract dosage form development, commercial manufacturing, and analytical services.” Source: RevenueBase Database · checked Sep 19, 2026
15	GFS Chemicals	Indirect evidence	Powell, OH, United StatesHQ checked Sep 19, 2026	51-200	195 contacts →
	Indirect evidence “We don’t just make chemicals.” Source: RevenueBase Database · checked Sep 19, 2026
16	Jubilant Pharma Limited	Indirect evidence	Yardley, PA, United StatesHQ checked Sep 19, 2026	1,001-5,000	184 contacts →
	Indirect evidence “Jubilant Pharma Limited is a global integrated pharmaceutical company offering a wide range of products and services to our customers across geographies.” Source: RevenueBase Database · checked Sep 19, 2026
17	Serán Bioscience	Indirect evidence	Bend, OR, United StatesHQ checked Sep 19, 2026	201-500	183 contacts →
	Indirect evidence “At Serán, Our mission is to provide optimized drug development and manufacturing services for our clients, from discovery to the clinic.” Source: RevenueBase Database · checked Sep 19, 2026
18	Adesis, INC	Indirect evidence	New Castle, DE, United StatesHQ checked Sep 19, 2026	51-200	182 contacts →
	Indirect evidence “Adesis Inc.” Source: RevenueBase Database · checked Sep 19, 2026
19	Quality Chemical Laboratories	Indirect evidence	Wilmington, NC, United StatesHQ checked Sep 19, 2026	201-500	177 contacts →
	Indirect evidence “QCL is science driven, quality focused, and responsive.” Source: RevenueBase Database · checked Sep 19, 2026
20	Ambiopharm	Indirect evidence	North Augusta, SC, United StatesHQ checked Sep 19, 2026	501-1,000	174 contacts →
	Indirect 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 19, 2026
21	Global Pharma TEK	Indirect evidence	Edison, NJ, United StatesHQ checked Sep 19, 2026	201-500	169 contacts →
	Indirect evidence “Founded in 2011, Global Pharma Tek (GPT) is a leading pharmaceutical conglomerate offering a wide range of services to the industry.” Source: RevenueBase Database · checked Sep 19, 2026
22	Woodstock Sterile Solutions	Indirect evidence	Woodstock, United StatesHQ checked Sep 19, 2026	501-1,000	167 contacts →
	Indirect evidence “Woodstock Sterile Solutions is a leading global provider of best-in-class sterile development and manufacturing solutions – with a decades-long track record of helping the…” Source: RevenueBase Database · checked Sep 19, 2026
23	Biospectra, INC	Indirect evidence	Bangor, PA, United StatesHQ checked Sep 19, 2026	201-500	152 contacts →
	Indirect evidence “BioSpectra Inc.(BSI), is a privately-owned manufacturer of premium pharmaceutical ingredients and bulk, cGMP fine chemicals, in service to many leading BioPharma companies around…” Source: RevenueBase Database · checked Sep 19, 2026
24	LGM Pharma	Indirect evidence	Boca Raton, FL, United StatesHQ checked Sep 19, 2026	51-200	152 contacts →
	Indirect evidence “LGM Pharma is a leading CDMO provider of comprehensive API sourcing and drug product contract development and manufacturing solutions to the pharmaceutical industry.” Source: RevenueBase Database · checked Sep 19, 2026
25	Emerald Performance Materials	Indirect evidence	Vancouver, United StatesHQ checked Sep 19, 2026	501-1,000	152 contacts →
	Indirect evidence “Specialty chemicals company LANXESS acquired Emerald Kalama Chemical and now has an even stronger Consumer Protection segment with a broad product portfolio and a global scope.” Source: RevenueBase Database · checked Sep 19, 2026

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: apis and intermediates producers. 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 apis and intermediates producers.
Partial evidence: Its own public description names part of apis and intermediates producers, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name apis and intermediates producers. 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 587 apis and intermediates producers based in the United States

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 7,712 reachable decision-makers.

Free signup · no credit card

View the full list →

Apis and intermediates producers based in the United States at a glance

As of Sep 19, 2026

30.0%Verified-email coverage

43.8Average contacts per company

11-50Median size (employees)

2.9%Largest-city concentration · San Diego

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

213

11-50

199

51-200

102

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

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 587 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 apis and intermediates producers, 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 “apis and intermediates producers”. 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 apis and intermediates producers), 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 apis and intermediates producers, 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, 7,712 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 19, 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 apis and intermediates producers, 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 apis and intermediates producers are there based in the United States?

RevenueBase identified 587 apis and intermediates producers 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?

W. R. Grace, headquartered in Columbia, tops this list with the largest team on record.

Which city has the most apis and intermediates producers?

San Diego leads with 17 headquartered companies, followed by Wilmington (9) and Houston (8).

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 7,712 verified decision-maker contacts tracked across these 587 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 19, 2026.

Ready to reach these companies? Verified emails and direct dials for all 587 apis and intermediates producers based in the United States. Start with a free account, no credit card.

Download this list →

Related lists

Apis and intermediates producers by geography

Browse the directory

Browse: Companies home · All United States lists · All Apis and intermediates producers lists · New lists

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.