About us


DOTTIKON manufactures high-quality performance chemicals, intermediates, and exclusive active pharmaceutical ingredients (APIs) for the world's leading chemical, biotech, and pharmaceutical industry.

The company with its production site in Dottikon (Aargau, Switzerland) is specialized in hazardous reactions and positions itself as strategic development and manufacturing partner and performance leader. Its safety culture created over more than 110 years guides the innovative use of hazardous reactions, low-temperature and high-pressure chemistry, as well as continuous processing in order to challenge, tighten, or shorten conventional chemical synthesis routes, improve selectivities, yields, and purities, as well as reduce energy consumption, waste, and CO2 emissions sustainably. The versatile technology and equipment portfolio is used, maintained, and continuously expanded to design, develop, and optimize chemical processes and technical manufacturing procedures for the rapid scale-up from kilograms to multi-tons in order to produce and deliver the respective market volumes.

DOTTIKON's one-site strategy allows reduced decision and communication pathways. This ensures rapid and efficient project development and management, clear and transparent data and process documentation, and close customer communication.

OPEN-AIR EXHIBITION – May 29 until August 25, 2024


This project is dedicated to the people who, despite machine support, process materials with a considerable amount of skilled manual labor to create and produce valuable pieces of work and constructions for use: The Masters of Manufacturing. The people who pour concrete, assemble steel girders, weld pipes, or install equipment, and those who manufacture active pharmaceutical ingredients using the production facilities ultimately built. These craftsmen perform the reality check from the theoretical plan to practical feasibility in detail. It is the execution planning and execution by these professionals that ultimately assure usability, quality, and cost-effectiveness in practice. The real skills labor shortage is among experienced professionals who understand their craft and execute it correctly: The craftsmen!

Photographer Pierluigi Macor has accompanied the construction of the new API production facilities at our site in Dottikon (Aargau, Switzerland) over the past three years.

He has captured impressions and thus created his own "BAUWERK" (German for Construction/Opus).


Pierluigi Macor, international art and fashion photographer, has photographed for publications such as Vogue, ID, Zeit Magazin and Süddeutsche Zeitung. His freelance work can be seen in books, publications, and exhibitions.

He lived between Paris and Zurich for eleven years and is now based in Zurich. Pierluigi loves the down-to-earth, the simple and natural, the real. He consistently places his captured impressions in the context of authenticity and naturalness. Pierluigi's photographs convey emotions that sometimes seem surreal, abstract, and multi-layered, then again completely human.

Hembrunnstrasse 17, 5605 Dottikon
Accessible all day; free admission
Please follow the signs
Within walking distance of the Dottikon-Dintikon railway station
Free parking available

+41 56 616 82 01


DOTTIKON's roots date back to 1913, when the company was founded under the name of Schweizerische Sprengstoff-Fabrik AG (SSF), a specialist in explosives.

From the 1930s to the 1970s, SSF developed processes for nitration, hydrogenation and oxidation, which evolved into the chemical intermediates business and the production based hazardous chemical reactions that the company still excels in today. In 1987, the today named EMS-CHEMIE HOLDING AG purchased the company and officially changed its name to Ems-Dottikon AG end of 1989. Amid a spin-off from EMS-CHEMIE HOLDING AG in 2005, the company received its current name, Dottikon Exclusive Synthesis AG, and the parent company Dottikon ES Holding AG's shares went public in an IPO in the main segment of the SIX Swiss Exchange on March 31 of the same year. In 2013, the company celebrated its 100-year anniversary.

Photo documentation 100 years DOTTIKON


More than 75 Percent of Net Sales with APIs

Revenues are broadly diversified with customers ranging from small to midsized and large corporations. According to the respective billing addresses and reallocated for the decision makers' geographical location, the geographical revenue split in the business year 2023/24 is as follows

  • Europe (Switzerland excluded) 60%
  • Switzerland 21%
  • US 18%
  • Asia 1%

Organization & Management

DOTTIKON is an entity of SIX-listed Dottikon ES Holding AG. The stable senior management and shareholder structure of the DOTTIKON ES Group enables sustainable value growth at the manufacturing site in Dottikon, Switzerland.

Board of Directors

  • Dr. Markus Blocher (Chairman)
  • Dr. Alfred Scheidegger (Deputy Chairman)
  • Dr. Bernhard Urwyler

Senior Management

  • Dr. Markus Blocher (CEO)
  • Marlene Born (CFO)
  • Karin Krause (Head of Human Resources)
  • Dr. Stephan Kirschbaum (Head of Business Development)
  • Dr. Urs Brändli (Head of Processes & Technologies)
  • Dr. Thomas Rosatzin (Head of Purchasing)
  • Dr. Robert Dahinden (Head of Production)
  • Dr. Rolf Schaller (Head of Quality Management)

DOTTIKON is organized around the main processes business and process development, purchasing, production and quality management.

The production facility is located on approximately 600'000 m2 in Dottikon (Switzerland), close to Basel and Zurich. About 100'000 m2 of the premises are reserved for development of customer-driven production facilities.


DOTTIKON's headquarters are located in Dottikon, Switzerland.

Headquarters Switzerland

Dottikon Exclusive Synthesis AG
Hembrunnstrasse 17
5605 Dottikon

Tel +41 56 616 81 11

View map

Representative Office USA
Dottikon ES America, Inc.

Falcon Nesting Box

The common kestrel (Falco tinnunculus) is a bird of prey species belonging to the kestrel group of the falcon family Falconidae. It is well known, as it has also conquered cities and urban spaces as living space and can often be observed during its typical "hovering flight". It is widespread in Europe, Asia, and Africa and occasionally reaches the east coast of North America.

From the 1960s, the common kestrel, a skilled mouse hunter, became increasingly rare in Switzerland, not least due to the loss of suitable breeding sites. Bird conservationists subsequently installed nesting boxes, which led to a continuous increase in the breeding population since the turn of the millennium. On the DOTTIKON company premises, too, we can regularly look forward to new kestrel hatchlings.