Clearsynth, a firm with international credentials, operates its R&D Centre in the United States and has distribution points in Japan, India, and the United States. It houses the world's largest collection of Certified Analytical Reference Standards and Research Chemicals, with over 288,000 products available online to expedite research. Clearsynth provides a wide range of offerings including Drug Standards, Metabolites, Impurities, Glucuronides, Carbohydrates, Building Blocks, Nucleosides, Peptides, Nutraceuticals, Phytochemicals, Chiral Molecules, Intermediates, Natural Products, and Stable Isotopes, positioning Deuterium 13C and 15N in the most secure position to minimize exchange and ensure the quality of assay.