7-methoxy-2-methyl-3-phenylchromen-4-one

(2-methoxynaphthalen-1-yl)-phenyldiazene

7-甲基-7H-嘌呤

9-甲基-9H-嘌呤

1-(2-羟基-4-甲氧基苯基)-2-苯乙酮