5752-21-6;AC1L96RI;7,9-dimethyl-3H-purin-9-ium-2,6-dione;1,6-Dihydro-2-hydroxy-7,9-dimethyl-6-oxopurinium hydroxide, inner salt;Purinium, 1,6-dihydro-2-hydroxy-7,9-dimethyl-6-oxo-, hydroxide, inner salt
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