SEQENS ADVANCED SPECIALTIES is a worldwide leader in custom chemistry for industry players, offering R&D and manufacturing expertise for the development of your specialty chemicals.

Widening your capabilities with our industrial equipment

Our equipment

Our key technologies & processes

  • Batch Reactions
  • Catalyst Regeneration
  • Crystallization
  • Distillation
  • Drying
  • Extractions
  • Flow chemistry
  • Filtration
  • Fixed-bed Reaction
  • Hydrogenation
  • Low metal purification
  • Recrystallization


Widen your capabilities with our industrial equipment

Seqens is a European reference in industrialization of high value added custom materials, granting flexibility and reliability to its customers. We help you from the early stage of upscaling development, acting as an external support to bring your products from laboratory to factory. Offering multi-step synthesis, process optimization and cost reduction advice, we also have strong assets to integrate your supply chain as an outsourcer in the case of “make or buy” decisions.

Seqens highly flexible technological platform adapts to your requirements and meets your needs, no matter how varied. We count on our extensive toolbox of chemistries and processes to provide you with the best tailor-made solutions, committing to high quality standards.

Overcome your chemical challenges with our R&D expertise

Seqens teams closely collaborate with customers so as to understand their requirements and major hurdles all along the projects. Thanks to seasoned scientists and state-of-the-art lab equipment located in our global R&D centers, we are able to support customer innovation within contract research projects. In France, working with us enables you to get a Crédit Impôt Recherche (CIR) tax refund.

We have formed partnerships with leading companies in many industrial sectors including cosmetics, defense & aerospace, energy storage, fluid processing, paint & ink, plastic & rubber.

Optimize your time to market with our custom chemistry process

Seqens offers the possibility to start your collaboration from the stage you need: R&D study, scale-up or industrialization. We work in complete confidentiality on the processes you own. We are also able to develop or optimize a specific process thanks to our R&D teams and pilots.

Seqens bets on long-term relationship through supply agreements, while offering occasional manufacturing services when needed. Committed to success of customers’ projects and equipment upgrade, we invest in new industrial and R&D equipment each year.

Our locations

Address ZI de Limay 2, 8 Rue de Rouen
78440 Porcheville
Phone +33 1 34 79 57 00
Market Pharmaceutical, Specialty Ingredients & Cosmetics
More information

Surface: 40, 000 m²

Lab surface: 2, 000 m²


  • 4 kilo-labs
  • 2 cGMP pilot plants with 11 multipurpose reactors from 100 L to 2, 800 L (total capacity of 12 m³)
  • Temperature range: -15/+150°C  (hastelloy reactor: -80/+200°C)
  • 3 finishing rooms (agitated filter dryers, filters, dryers, milling and sieving equipments)

Flagship technologies:

  • Crystallization expertise and technologiesd(salt, co-crystal and polymorph screenings, process development)
  • Process Safety expertise and tecnologies
  • Flow chemistry for fine chemicals
  • Potent API process development
  • Genotoxic Impurities
  • Issue Management
  • Generic A.P.I Solid state expertise

Last inspection: ANSM  October 2018

Certification: GMP

Number of scientists: 110

Other: Ecosystem Pharma with integrated services

Address 70 Allée Graham Bell
30000 Nîmes
Phone +33 4 66 70 64 64
Market Pharmaceutical, Specialty Ingredients & Cosmetics
More information

Surface: 1, 000 m²

Lab surface: 500 m²


  • 1 kilo-lab in fermentation (80 L total capacity)
  • Robotic platform for highthroughput screening (HTS)
  • Analytical platform for chromatography (GC, GC-MS, U-HPLC)

Flagship technologies: 

  • Protein engineering
  • Microbiology aerobic & anaerobic
  • Syngas fermentation
  • Enzymes & strains fermentation
  • Biochemistry
  • Biocatalysis
  • Design of experiments (DoE)
  • Data mining

Number of scientists: 19

Address 15 Avenue des Frères Lumière
Business Line Contract Manufacturing & Fine Chemicals
Phone +33 4 74 93 63 33
More information

EcoVadis CSR RatingGold Certification

Address 725 rue Trotter
QC J3B8J8Saint-Jean-sur-Richelieu
Business Line Electronics
Phone +1 450 348 09 01
Market Specialty Ingredients
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Surface: 15, 500 m²

Lab surface: 200 m²

Flagship technologies: 

  • Monomers and polymers Heterocycles
  • Polyphenol and azo dyes (with a low metal content)
  • Photo-active compounds (PAC) / photo-active generators (PAG)
  • Cyanine-based dyes
  • NOVOLAK and phenolic resins
  • Silicon chemistry (polysiloxane)
  • Anthracene derivatives (microelectronic grade)

Last inspections: ISO 9001 February 2019


  • ISO 9001
  • C-TPAT
  • Responsible Care

Number of scientists: 8

Address Route de Lassay
Business Line Lubbricant Additives, Fine Chemicals
Phone +33 2 33 37 50 20
Market Specialty Ingredients
More information

Surface: 120, 000 m²

Capabilities: 190 m³ of ISO 9001 reactors and kilo-lab

Flagship technologies: Most standard organic synthesis reactions (large volumes)

Certifications: ISO 9001