186581-53-3
重氮甲烷
+
1143-72-2
2,3,4-三羟基二苯甲酮
→
35836-41-0
(2,3-dihydroxy-4-methoxyphenyl)-phenylmethanone
177703-29-6
(3,4-dihydroxy-2-methoxyphenyl)-phenylmethanone
77-78-1
硫酸二甲酯