About us

Welcome to Katwijk Chemie, a trusted producer of Active Pharmaceutical Ingredients (APIs), located in Katwijk, The Netherlands.

For more than 100 years, we have supplied our customers with high quality products manufactured in our own plant, supported by personal and flexible service. Our global sales partners network provides you with convenient local contacts world-wide.

Our major products are Active Pharmaceutical Ingredients (APIs) for Regulated markets. An example is Valproic Acid, used in human drugs to treat epilepsy. We also take an active interest in producing exclusive products for specific customers and we supply a number of fine chemicals for various industrial uses.


Your benefits with Katwijk Chemie



All our products are manufactured under cGMP conditions in our plant in Katwijk. Our plant is regularly inspected by the US and European authorities (since 1976 and 2003, respectively). We also receive some 20 audits each year from our pharmaceutical customers.

Most recent inspections: 2017 (IGZ, The Netherlands); 2018 (FDA, USA)



We regularly exhibit at the CPhI Worldwide (October, Europe, www.cphi.com), and we attend the DCAT week (March, New York, www.dcat.org), and the Chemspec Europe (www.chemspeceurope.com). We look forward to meeting you there!