Cleanchem is Independent reliable R&D based custom manufacturing (CRO / CRAMS) company located in Mumbai, India. Deals in various products & Services to Pharmaceutical, Agrochemicals, Biotech, Specialty chemical and allied industries. We are doing custom synthesis of Impurities, Reference standards and other specialty chemicals. 100+ Nitrosamines In stock with us. Provide Analytical service of Isolation, characterization and Identification of Unknown Impurities, Process related impurities.