1-Theobromineacetic acid 1H-Purine-1-acetic acid, 2,3,6,7-tetrahydro-3,7-dimethyl-2,6-dioxo- 2,3,6,7-Tetrahydro-3,7-dimethyl-2,6-dioxo-1H-purine-1-acetic acid 3,7-Dimethylxanthine-1-methanecarboxylic acid 5614-56-2 EINECS 227-034-0