Dynaction SA, through its subsidiary, PCAS SA, provides fine specialty chemicals primarily for pharmaceutical synthesis market worldwide. The company offers custom synthesis services, which include the development and manufacture of chemical intermediates, registered intermediates, and active pharmaceutical ingredients; building blocks and intermediates, such as acrolein, biocatalysis, thiophene derivatives, phosphonates for Wittig-Horner reactions, acid chlorides, cryogenic chemistry, boronic acids, and chiral building blocks; and early phase services consisting of drug substance development and production, such as chemical process development, GMP manufacture of clinical trial materials, analytical methods development and validation, new commercial route scouting, polymorphism assessment, and ICH stability studies for emerging pharmaceutical companies. It also offers Expansorb, a range of biocompatible and biodegradable polymers, cGMP excipients, diagnostic chemicals, and custom services; and ChemMatrix resins for solid phase peptide synthesis. In addition, the company provides custom manufacturing services; aroma chemicals used in applications, such as fine fragrances, soap and detergents, household products, and flavours; cosmetic ingredients, which include active ingredients, monomers, polymers, pigments, excipients, and biocatalysis facilities; performance chemicals for lubricants and protection additives industries; advanced materials precursors; photosensitive resins, anti-reflective coatings, and printed electronic products for microelectronics; and imaging chemicals that include lithographic chemicals, polymers, and printing inks ingredients. Dynaction SA is based in Longjumeau, France. As per the transaction announced on April 11, 2013, Dynaction SA was acquired by PCAS SA.