苯磺酰肼

3,7-dimethyl-8-phenylxanthine

8-溴-1,3,7-三甲基嘌呤-2,6-二酮

8-氯-3,7-二氢-1,3,7-三甲基-1H-嘌呤-2,6-二酮

(1,3,7-trimethyl-2,6-dioxo-2,3,6,7-tetrahydro-1H-purin-8-yl)tetrakis(trimethyl-l5-phosphaneyl)cobalt