ETHYL 8-METHYL-4H-(1)-BENZOPYRANO(4 3-B&
8-甲基-4H-[1]-苯并吡喃[4,3-B]噻吩-2-羧酸乙酯
CAS No. 351003-39-9
ETHYL 8-METHYL-4H-(1)-BENZOPYRANO(4 3-B&
8-甲基-4H-[1]-苯并吡喃[4,3-B]噻吩-2-羧酸乙酯