Caffeine or trimethylxanthine

This classification denotes a cns stimulant and bioactive food component with the molecular formula C8H10N4O2, a preparation that US FDA regulates as an active ingredient or moiety under Unique Ingredient Identifier 3G6A5W338E, chemically known as 1,3,7-trimethylxanthine but more generally known as caffeine, which bears US NIH Compound Identifier 2519. caffeine comes in many forms, including base, benzoate, benzoate sodium, bromide, citrate, hydrobromide, hydrochloride, hydroiodide, monohydrate, salicylate, sodium benzoate, sodium benzoicum, and sodium salicylate. European Medicines Agency schedules Caffeine in its eXtended EudraVigilance Medicinal Product Dictionary or XEVMPD under Index SUB13146MIG. World Health Organization schedules caffeine in its Anatomical Therapeutic Chemical (ATC) Classification. Caffeine or trimethylxanthine bears US NLM identifiers UMLS ID C0006644 and NCI Concept Code C328. SMILES: O=C1N(C(=O)N(C2NCN(C12)C)C)C.