Company lists · Data refreshed September 2026

Top 25 Pharmaceutical synthesis companies based in the United States

Name: Pharmaceutical synthesis companies based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 17, 2026 1,258 companies tracked

RevenueBase identified 1,258 pharmaceutical synthesis companies headquartered in the United States as of September 2026 and tracks 63,320 professional contacts across them, including 21,315 with verified work emails. San Diego is the largest hub.

This list covers pharmaceutical synthesis companies 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.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 17, 2026 86% judged on-target in blind review

1,258Companies

63,320Contacts tracked

21,315Verified emails

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The 25 largest pharmaceutical synthesis companies based in the United States

Ranked by team size

Top 25 of 1,258 pharmaceutical synthesis companies based in the United States, ranked by team size, largest first. Data refreshed Sep 17, 2026. RevenueBase Smart Search rates how each company's information relates to pharmaceutical synthesis companies: 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	Lupin Pharmaceuticals	Partial evidence	Somerset, NJ, United StatesHQ checked Sep 17, 2026	n/a	4,649 contacts →
	Partial evidence “Lupin Pharmaceuticals, Inc.” Source: RevenueBase Database · checked Sep 17, 2026
2	Hovione	Indirect evidence	East Windsor, NJ, United StatesHQ checked Sep 17, 2026	1,001-5,000	2,213 contacts →
	Indirect evidence “At Hovione, we help partners turn scientific innovation into medicines that reach patients around the world.” Source: RevenueBase Database · checked Sep 17, 2026
3	Patheon	Indirect evidence	Waltham, MA, United StatesHQ checked Sep 17, 2026	10001+	2,004 contacts →
	Indirect evidence “Thermo Fisher Scientific provides industry-leading pharma services for drug development, clinical trial logistics, and commercial manufacturing through our Patheon™ brand.” Source: RevenueBase Database · checked Sep 17, 2026
4	KBI Biopharma	Indirect evidence	Durham, NC, United StatesHQ checked Sep 17, 2026	1,001-5,000	1,645 contacts →
	Indirect evidence “KBI Biopharma is an award-winning biopharmaceutical contract services organization providing fully-integrated, accelerated drug development and biomanufacturing services to…” Source: RevenueBase Database · checked Sep 17, 2026
5	Cambrex	Indirect evidence	East Rutherford, NJ, United StatesHQ checked Sep 17, 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 17, 2026
6	Torrent Pharma INC	Partial evidence	Basking Ridge, NJ, United StatesHQ checked Sep 17, 2026	n/a	1,187 contacts →
	Partial evidence “Torrent Pharma Inc.(TPI) is the 100% US subsidiary of Torrent Pharmaceuticals Ltd, a leading pharmaceuticals company in India with a growing presence in the global generics market.” Source: RevenueBase Database · checked Sep 17, 2026
7	Aurobindo Pharma Usa, INC	Partial evidence	East Windsor, United StatesHQ checked Sep 17, 2026	501-1,000	1,101 contacts →
	Partial evidence “Aurobindo USA is committed to delivering a broad portfolio of quality, affordable generic pharmaceuticals to pharmacists and patients.” Source: RevenueBase Database · checked Sep 17, 2026
8	PAR Pharmaceutical	Partial evidence	Chestnut Ridge, NY, United StatesHQ checked Sep 17, 2026	501-1,000	1,095 contacts →
	Partial evidence “Par Pharmaceutical: High-Quality, Cost-Effective Generic Products Par Pharmaceutical, headquartered in Chestnut Ridge, New York, develops, manufactures and markets safe…” Source: RevenueBase Database · checked Sep 17, 2026
9	Colorcon	Indirect evidence	Harleysville, PA, United StatesHQ checked Sep 17, 2026	1,001-5,000	1,088 contacts →
	Indirect evidence “Colorcon is a world leader in the development, supply and technical support of formulated film coating systems, modified release technologies, core excipients, and functional…” Source: RevenueBase Database · checked Sep 17, 2026
10	Empower Pharmacy	Partial evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	1,001-5,000	1,002 contacts →
	Partial evidence “Empower Pharmacy and Empower Pharma are transforming the landscape of compounding pharmaceuticals by delivering personalized, high-quality medication solutions at scale.” Source: RevenueBase Database · checked Sep 17, 2026
11	Apellis Pharmaceuticals	Indirect evidence	Waltham, MA, United StatesHQ checked Sep 17, 2026	501-1,000	823 contacts →
	Indirect evidence “Apellis is now part of Biogen.” Source: RevenueBase Database · checked Sep 17, 2026
12	Kyowa Kirin, Inc.- U.S	Partial evidence	Princeton, NJ, United StatesHQ checked Sep 17, 2026	501-1,000	727 contacts →
	Partial evidence “Kyowa Kirin is a global specialty pharmaceutical company that applies state-of-the-art biotechnologies to discover and deliver novel medicines.” Source: RevenueBase Database · checked Sep 17, 2026
13	Advansix	Indirect evidence	Parsippany, NJ, United StatesHQ checked Sep 17, 2026	1,001-5,000	678 contacts →
	Indirect evidence “Every day, AdvanSix employees create chemistries that turn possibilities into solutions.” Source: RevenueBase Database · checked Sep 17, 2026
14	Akorn Pharmaceuticals	Partial evidence	Lake Forest, IL, United StatesHQ checked Sep 17, 2026	1,001-5,000	616 contacts →
	Partial evidence “At Akorn, we develop, manufacture and market specialty pharmaceuticals, including prescription, consumer health and animal health products.” Source: RevenueBase Database · checked Sep 17, 2026
15	Nitto Avecia	Indirect evidence	Milford, MA, United StatesHQ checked Sep 17, 2026	501-1,000	603 contacts →
	Indirect evidence “Oligonucleotides are giving rise to a new generation of therapeutics-and Nitto Avecia is helping lead the way.” Source: RevenueBase Database · checked Sep 17, 2026
16	Veranova	Partial evidence	Devens, MA, United StatesHQ checked Sep 17, 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 17, 2026
17	IA	Indirect evidence	Indianapolis, IN, United StatesHQ checked Sep 17, 2026	501-1,000	550 contacts →
	Indirect evidence “iA® (Innovation Associates®) is a pharmacy fulfillment company that provides an integrated platform of capabilities to support centralized pharmacy fulfillment and community…” Source: RevenueBase Database · checked Sep 17, 2026
18	SK Pharmteco	Indirect evidence	Rancho Cordova, CA, United StatesHQ checked Sep 17, 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 17, 2026
19	Adare Pharma Solutions	Indirect evidence	Philadelphia, PA, United StatesHQ checked Sep 17, 2026	501-1,000	487 contacts →
	Indirect evidence “Adare Pharma Solutions is a global technology-driven CDMO providing end-to-end integrated services, from product development through commercial manufacturing and packaging, with…” Source: RevenueBase Database · checked Sep 17, 2026
20	Alvogen	Indirect evidence	Morristown, NJ, United StatesHQ checked Sep 17, 2026	501-1,000	471 contacts →
	Indirect evidence “Alvogen is a U.S.” Source: RevenueBase Database · checked Sep 17, 2026
21	Catalent Pharma Solutions	Indirect evidence	Somerset, NJ, United StatesHQ checked Sep 17, 2026	10001+	441 contacts →
	Indirect evidence “Catalent Inc.(NYSE: CTLT), an S&P 500® company, is the global leader in enabling pharma, biotech, and consumer health partners to optimize product development, launch, and full…” Source: RevenueBase Database · checked Sep 17, 2026
22	Monument Chemical	Indirect evidence	Indianapolis, IN, United StatesHQ checked Sep 17, 2026	501-1,000	401 contacts →
	Indirect evidence “Every day, our customers bring us their toughest chemistry challenges.” Source: RevenueBase Database · checked Sep 17, 2026
23	Amphastar Pharmaceuticals, INC	Partial evidence	Rancho Cucamonga, CA, United StatesHQ checked Sep 17, 2026	1,001-5,000	392 contacts →
	Partial evidence “Amphastar Pharmaceuticals is a recognized pharmaceutical company that uses state-of-the-art, cGMP-compliant facilities to develop, manufacture, and market biopharmaceutical…” Source: RevenueBase Database · checked Sep 17, 2026
24	Impax Laboratories	Partial evidence	Hayward, CA, United StatesHQ checked Sep 17, 2026	5,001-10,000	372 contacts →
	Partial evidence “Impax combined with Amneal Pharmaceuticals LLC to form a dynamic combined company, Amneal Pharmaceuticals, Inc.(NYSE:AMRX), powered by a robust U.S.” Source: RevenueBase Database · checked Sep 17, 2026
25	Contract Pharmacal Corp	Indirect evidence	Hauppauge, NY, United StatesHQ checked Sep 17, 2026	1,001-5,000	371 contacts →
	Indirect evidence “Join Contract Pharmacal Corp.(CPC) on a journey to a healthier world where innovation meets excellence in developing, manufacturing, packaging and testing cutting edge vitamins…” Source: RevenueBase Database · checked Sep 17, 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: pharmaceutical synthesis companies. 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 pharmaceutical synthesis companies.
Partial evidence: Its own public description names part of pharmaceutical synthesis companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name pharmaceutical synthesis companies. 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 1,258 pharmaceutical synthesis companies based in the United States

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Pharmaceutical synthesis companies based in the United States at a glance

As of Sep 17, 2026

33.7%Verified-email coverage

50.3Average contacts per company

11-50Median size (employees)

2.9%Largest-city concentration · San Diego

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

451

11-50

413

51-200

232

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 1,258 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 pharmaceutical synthesis companies, 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 “pharmaceutical synthesis companies”. 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 pharmaceutical synthesis companies), 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 pharmaceutical synthesis companies, 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, 21,315 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.

Pharmaceutical synthesis companies by metro

Pharmaceutical synthesis companies in San Diego37
Pharmaceutical synthesis companies in New York25

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 pharmaceutical synthesis companies, 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 pharmaceutical synthesis companies are there based in the United States?

RevenueBase identified 1,258 pharmaceutical synthesis companies 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?

Lupin Pharmaceuticals, headquartered in Somerset, tops this list with the largest team on record.

Which city has the most pharmaceutical synthesis companies?

San Diego leads with 37 headquartered companies, followed by New York (25) and Wilmington (18).

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 21,315 verified decision-maker contacts tracked across these 1,258 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.