TLC Pharmaceutical Standards Ltd., established in 2007, is a leading provider of custom-synthesized drug impurities, metabolites, stable isotope labeled compounds, Glucuronides, Nitrosamines, and other analytical Reference Standards. Our unwavering commitment to quality has earned us recognition as a trusted source for Reference Standards, backed with ISO 9001 and ISO 17025 accreditations, and ISO 17034 pending by end of 2023. With our head office in Newmarket, Ontario, Canada and international offices in Nanjing, China, and Hyderabad, India, we ensure rapid delivery of over 20,000 stock items to researchers worldwide.