Allantoin

This classification denotes an astringent and anti-psoriatic agent with the molecular formula C4H6N4O3, a preparation that US FDA regulates as an active ingredient or moiety under Unique Ingredient Identifier 344S277G0Z, chemically known as 5-ureido-2,4-imidazolidindion but generally known as allantoin, which bears US NIH Compound Identifier 204. Allantoin comes in various forms, including acetyl methionine, ascorbate, biotin, glycyrrhetinic acid, n-acetyl-dl-methionine, and sodium succinate. European Medicines Agency schedules Allantoin in its eXtended EudraVigilance Medicinal Product Dictionary or XEVMPD under Index SUB12779MIG. Most nations schedule allantoin under HS 29332100 and SITC 51572. As of Q4 2014, ALLANTOIN remains the US FDA Preferred Term for this commodity. Allantoin bears US NLM identifiers UMLS ID C0002083 and NCI Concept Code C74277. SMILES: O=C1NC(=O)NC1NC(=O)N.