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Amideus Full Colour Logo

The Right Time

Amideus is a symphony of quality engineered phosphoramidite services helping to power the oligonucleotides market of the future

The Right Place

Swiss quality and Indian production scale working in harmony to supply a unique ‘best of both worlds’ Amidites product range

The Right Product

A reliable fully integrated supply chain with massive capacity at our parent company Deccan with sites in India, mitigating geopolitical risks

The Right Decision

Amidites manufactured near Basel, Switzerland under our Amideus brand are in tune with our customers’ expanding requirements

Amideus from Primopus®

Amideus is an amidites manufacturer of quality phosphoramidites helping to power the oligonucleotides market of the future. Based in Basel, Switzerland and Goa, India it gives our clients the best of both worlds for long-term supply of volume amidites.

Amideus Pilot Plant

Product Portfolio

Producing larger volume amidites requires a different production model than producing quantities for R&D purposes. The final product needs to be produced economically and in the Right place in order to enable a larger patient access.

Amideus at TIDES Europe 2023

News & Events

We look forward to attending TIDES Europe in November. It’s one of the industry’s leading events to accelerate therapeutics to market. We hope to see you all there.

The Right Opportunity at Amideus

The Right Opportunity

Amideus, the phosporamidites brand of Primopus is designed to support the fast growing Oligonucleotides market. Our service is at the right time and in the right place offering a best of both worlds solution for our customers.

Amideus best of both worlds

The Best of Both Worlds

Amideus spans Switzerland and India bringing necessary advantages from both worlds. We are pleased to supply critical building blocks while our customers create the Oligonucleotide medicines for high unmet needs worldwide.

Facilities at Amideus


Amideus backwards integrates from a former big pharma GMP API site on the outskirts of Basel, Switzerland into the massive bulk development and supply capability of Deccan Fine Chemicals in Goa, India. The two sites enable Amideus to offer great flexibility and scale.

Amideus set to be carbon neutral

Carbon Neutral

Sustainability is at the core of our operations. Our Swiss site will be net zero carbon by 2028 for all utilities and thereafter we will meet the COP26 goals of net zero carbon by 2050. Our Goa site was designed and built to co-exist in harmony which is home to two lakes.

Careers at Amideus Primopus


Amideus is providing opportunities for innovative chemists, scientists and engineers at our Basel and Goa sites. It is our belief that the better you feel about your career, the better it motivates which in turn leads to better results for the whole of society and us as a business.