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This article is about the chemical substance caffeine. For other uses, see Caffeine (disambiguation). Caffeine General Systematic name 1,3,7-trimethyl-1H-purine-2,6(3H,7H)-dione Other names 1,3,7-trimethylxanthine trimethylxanthine theine mateine guaranine methyltheobromine Molecular formula C8H10N4O2 SMILES O=C1C2=C(N=CN2C)N(C(=O)N1C)C Molar mass 194.19 g/mol Appearance Odorless, white needles or powder CAS number [58-08-2] Properties Density and phase 1.2 g/cm3, ...
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