Company lists · Data refreshed November 2026

Top 25 Custom synthesis companies based in France

RevenueBase identified 71 company matches for custom synthesis companies associated with France as of November 2026 and tracks 6,333 professional contacts across them, including 1,462 with verified work emails. Paris is the largest hub.

This list covers company matches for custom synthesis companies associated with France, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed November 6, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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 RevenueBase SmartSearch · Exact Recorded Nov 6, 2026 How this list was built
71Companies
6,333Contacts tracked
1,462Verified emails
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The 25 largest custom synthesis companies based in France

Ranked by team size
Top 25 of 71 company matches for custom synthesis companies based in France, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 6, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchTournon, FranceHQ recorded Nov 6, 202610001+3,240 contacts →

Exact match

“It all started in 1990, in the Ardèche region of France, with a family business and one clear ambition:, with tailored R&D, production and packaging that leaves nothing to chance.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2Exact matchLyon, FranceHQ recorded Nov 6, 20261,001-5,000401 contacts →

Exact match

“Novasep is a leading provider of services in the field of molecule production and purification for the life science industries, based on an unrivalled pool of specialized and…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3Exact matchMinakem, FranceHQ recorded Nov 6, 2026501-1,000276 contacts →

Exact match

“MINAKEM is a fully integrated development partner and commercial manufacturer for pharmaceutical companies- API manufacturing (Innovators/Generics and Highly Potent)- Custom…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4Exact matchVert-le-petit, FranceHQ recorded Nov 6, 2026201-500150 contacts →

Exact match

“PMC Isochem, part of PMC Group International, is a world leader in custom pharmaceutical manufacturing and polymer excipients offering- CDMO for APIs, Intermediates and Excipient…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5Exact matchLevallois-perret, FranceHQ recorded Nov 6, 2026501-1,000130 contacts →

Exact match

“Galien is a CDMO Pharmaceuticals company located in Burgundy, France.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6Exact matchLongjumeau, FranceHQ recorded Nov 6, 2026501-1,000129 contacts →

Exact match

“PCAS groupe industriel de chimie fine et de spécialités, développe et produit des molécules complexes faisant appel à des technologies de pointe.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7Exact matchÉcully, FranceHQ recorded Nov 6, 20261,001-5,000121 contacts →

Exact match

“SEQENS Custom & Specialties is one of Europe’s largest contract manufacturers, combining the speed and agility of a small/medium sized company with the health and safety and…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8Exact matchCalais, FranceHQ recorded Nov 6, 202651-200103 contacts →

Exact match

“INTEROR SA is a chemicals company based out of Calais, Nord-Pas-de-Calais, France.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9Exact matchÉcully, FranceHQ recorded Nov 6, 20261,001-5,00094 contacts →

Exact match

“Mastering a wide range of technologies, Seqens provide their clients with custom manufacturing services as well as a broad portfolio of Active Pharmaceutical Ingredients (APIs) &…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10Exact matchLyon, FranceHQ recorded Nov 6, 202651-20074 contacts →

Exact match

“EDELRIS is a pioneering company dedicated to the design and chemical synthesis of innovative natural product-like screening Libraries, medicinal chemistry Hit-to-Lead / Lead…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11Exact matchRoissy-en-france, FranceHQ recorded Nov 6, 202611-5062 contacts →

Exact match

“Founded in Diverchim is a Small Molecule Drug Substance CDMO that specializes in complex chemistry.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchGilette, FranceHQ recorded Nov 6, 202651-20061 contacts →

Exact match

“Established in South of France in 1971, La Mesta Chimie Fine is a technology driven Custom Manufacturing Organization.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact matchVert Le Petit, FranceHQ recorded Nov 6, 2026201-50052 contacts →

Exact match

“Founded in 1974, ISOCHEM is a contract manufacturer and one of the world’s leading suppliers of fine chemicals and active pharmaceutical ingredients.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14Exact matchSemoy, FranceHQ recorded Nov 6, 202611-5033 contacts →

Exact match

“With over 50 years’ experience in the formulation chemistry, OCO aims to be a leader in each of the businesses it serves.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15Exact matchSt Leu D Esserent, FranceHQ recorded Nov 6, 202611-5029 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact matchFranceHQ recorded Nov 6, 202651-20026 contacts →

Exact match

“Created in 2005, Alsachim is one of the world leaders in the synthesis of stable labeled (13C, 2H, 15N) internal standards, used in Bioanalysis studies, chemicals, building blocks…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17Exact matchSaint-nazaire-les-eymes, FranceHQ recorded Nov 6, 202611-5024 contacts →

Exact match

“ERAS Labo (Grenoble, France) is a CDMO mostly active in the fields of nuclear medicine (radiochemistry) and oligotherapy for more than 30 years.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18Exact matchAngres, FranceHQ recorded Nov 6, 202611-5024 contacts →

Exact match

“Située à 200 km au nord de Paris, PALCHEM est une société indépendante qui propose ses services de chimie fine et de synthèse à façon dans des délais très courts.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19Exact matchMontpellier Cedex 4, FranceHQ recorded Nov 6, 202611-5024 contacts →

Exact match

“OXELTIS is an independent medchem oriented service company managed by former researchers from Idenix Pharmaceuticals and located in Montpellier - France.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20Exact matchSaint Jean De Vedas, FranceHQ recorded Nov 6, 20261-1015 contacts →

Exact match

“PEPTIDES, PEPTIDE LIBRARIES AND PROTEINS Innovative chemistry for therapeutic, diagnostic and cosmetic applications GENEPEP is a CRO company (with CIR agreement) focused on…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21Exact matchSaint-herblain Cedex, FranceHQ recorded Nov 6, 202611-5010 contacts →

Exact match

“ATLANCHIM PHARMA is a chemistry-based CRO (Contract Research Organization) conducting confidential custom synthesis of complex molecules tailored to customer specifications.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22Exact matchNice, FranceHQ recorded Nov 6, 20261-107 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23Exact matchVillers-carbonnel, FranceHQ recorded Nov 6, 202611-506 contacts →

Exact match

“Située à 130 kms de Paris, Overchem société familiale indépendante, propose depuis 1983 des prestations de chimie à façon de haute qualité.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24Exact matchPoitiers, FranceHQ recorded Nov 6, 20261-104 contacts →

Exact match

“Founded at Poitiers (France) in 2003,@rtMolecule is a private incorporated company.@rtMolecule specializes in custom synthesis of organic molecules and provides the following…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25Exact matchParis, FranceHQ recorded Nov 6, 20261-102 contacts →

Exact match

“We are independent CMC consultants specialized in bioprocess development and industrialization.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase

Showing 25 of 71 custom synthesis companies based in France

See the full list, filter by size, metro and specialty, and access 1,462 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Custom synthesis companies based in France at a glance

As of Nov 6, 2026
23.1%Verified-email coverage
89.2Average contacts per company
11-50Median size (employees)
7.0%Largest-city concentration · Paris
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
29
11-50
21
51-200
8
201-500
4
501-1,000
4
1,001-5,000
3
10001+
1

Email recency for this list is measured worldwide rather than for France, so it is reported there. Company counts and contact totals on this page are exact for France, over 71 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source
The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies
Company records associated with France whose business descriptions match “custom synthesis companies” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch
Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview
The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality
RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 1,462 professional contacts with verified work emails across the full matched dataset. 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 November 6, 2026. Lists refresh periodically as the graph is re-checked.
Record context
Company records and descriptions can change. Check the company's website for its current services and locations.

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “custom synthesis companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many custom synthesis companies are there based in France?

RevenueBase identified 71 company matches for custom synthesis companies associated with France as of November 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Fareva tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most custom synthesis companies?

Paris leads with 5 company records, followed by Lyon (3) and Grabels (2).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 1,462 professional contacts with verified work emails tracked across these 71 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on November 6, 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 SmartSearch, 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.