121582-52-3
dimethyl 2-[(4-methoxyphenyl)hydrazinylidene]-3-oxopentanedioate
→
~83%
121582-61-4
4-羟基-1-(4-甲氧基苯基)-6-氧代-1,6-二氢-3-吡嗪羧酸甲酯
104-94-9
对氨基苯甲醚
1830-54-2
1,3-丙酮二羧酸二甲酯
121582-69-2
4-羟基-1-(4-甲氧基苯基)-6-氧代-1,6-二氢-3-吡嗪羧酸