Caronic Anhydride

Caronic Anhydride (CAS 67911-21-1) is manufactured directly by Hunan HuaTeng Pharmaceutical Co., Ltd. (Huateng Pharma), a global supplier of pharmaceutical intermediates and PEG derivatives, in pharmaceutical grade with a full technical support package for R&D, evaluation, pilot, and commercial-scale use. Notably, it serves as the starting material for the COVID-19 oral antiviral Paxlovid, and is sold across North America, Eastern Europe, and Asia.