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Who We Are

TCG Lifesciences Private Limited (formerly "Chembiotek Research International") is a leading contract research services company in the area of early drug discovery and development. We started our operations in the year 2001 in India, currently we have our presence in United States, Europe and Japan.

We have a strong talent pool of 700+ qualified and trained scientists, drawn from the best national and international institutes and industry.

Spread over 250,000 sq. ft. of space our services span from specific solutions to integrated discovery projects across multiple therapeutic areas with focus on Inflammation & Pain, Infectious Diseases and Central Nervous System (CNS). Our research infrastructure includes world class chemistry and biology laboratories, animal facility, electrophysiology laboratory, BSL 2 laboratory, and cGMP facilities at our R&D centers in Kolkata. Our API manufacturing subsidiary 'Clininvent' is located in Hyderabad, India.


Partner with global pharma and biotechnology companies and collaboratively discover new molecules to address the unmet medical needs. Collaborate with bio-medical researchers, research institutions and academia to accelerate generation of knowledge and leverage innovation and technology platforms.

Corporate Values

Customer Orientation

  • Build relationships with exceptional project delivery


  • We strive for a deeper understanding of our domain


  • Working in a unified manner for creating value for our clients; working cohesively towards organizational health


  • Being professional is our commitment to provide effective services to our clients and associates/stakeholders


  • We do the right thing, even in difficult situations


We are a part of ‘The Chatterjee Group’ (TCG), a global investment conglomerate headquartered in New York with strategic investments of over USD 1 Billion. The group is established by Dr. Purnendu Chatterjee. TCG is internationally known for generating significant capital appreciation through long term strategic investments, both in the private and public sectors. Dr. Chattejee has made several strategic investments in India, particularly in knowledge intensive industries, such as Information Technology, IT enabled services, Life Sciences, Real Estate and Petrochemicals amongst others. 

Contact Us
R&D Centers in India:
+91 33 23673151/52
Business Development: India