Seqens has been involved in the small-scale production of potent compounds for many years. As an element of our growth strategy, the Company was seeking an opportunity to construct a potent unit at one of our network sites in Europe or the USA — in 2020, this plan officially came to fruition.


The facility consists of two units, located in the same building, a smaller one named UPP10 and a larger one named UPP30, to handle production of potent molecules from tens of kilograms to several hundreds. The initial capacity will be 10–15 tons per year.

The potent unit will maintain a maximum level of particles in the working environment of 100 ng/m3. This level will allow for the production of Safebridge category 3 potent compounds — molecules with occupational exposure limits ranging from approximately 30 ng/m3 to 10 μg/m3.

The modular unit is specifically designed to be flexible and allow for future investments as customers needs evolve.

This investment of 30 million euros in one of the 3 leading technologies in pharmaceutical synthesis demonstrates the SEQENS group’s ability to design, develop and industrialize the most complex molecules while maintaining a high level of performance in terms of quality, safety and respect for the environment.

SEQENS inaugurates its HPAPI unit, in the presence of Emmanuel Macron, President of the French Republic

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Emmanuel Macron, President of the French Republic and Jean-Philippe Aubert, Head of the HPAPI unit project

High-Potency APIs site Villeneuve-La-Garenne

Our location

Address 35 Avenue Jean Jaurès
92390 Villeneuve-la-Garenne
Business Line Contract Manufacturing & Proprietary APIs
Phone +33 1 34 78 87 87
Market Pharmaceutical
More information


  • 70 m³ of GMP reactors
  • 100 L – 8 000 L vessels

Flagship technologies: 

  • Optical resolution
  • Enzymatic hydrolysis
  • Enantioselective reduction
  • Low-temperature reactions (-80 °C)
  • Specific reduction
  • Hydrogenation (40 bar)
  • Organomagnesium compounds
  • Thin-layer distillation

Last inspections:

  • ANSM 2019
  • ANVISA (Brasil) 2018
  • FDA 2016