106201-15-4
ethyl 3-[(2-hydroxyphenyl)carbamoyl]acrylate
→
~82%
77434-73-2
ethyl (3'-oxo-3',4'-dihydro-2'H-1',4'-benzoxazin-2'-yl)acetate
95-55-6
美沙拉嗪杂质C
106660-11-1
3,4-二氢-3-氧代-2H-(1,4)-苯并噁嗪-2-基-乙酸