2,2-Difluoro-1,3-benzodioxole-5-carboxaldehyde 98%2,2-Difluoro-5-formyl-1,3-benzodioxole3,4-(Difluoromethylenedioxy)benzaldehyde1,2-(Difluoromethylenedioxy)-4-formylbenzene2,2-二氟-1,3-苯并二噁茂-5-甲醛2,2-二氟-5-甲酰苯并二噁茂2,2-Difluoro-1,3-benzodioxole-5-carboxaldehyde2,2-Difluoro-5-formylbenzodioxole2,2-Difluorobenzo[d][1,3]dioxole-5-carbaldehyde2,2-Difluoro-1,3-benzodioxole-5-carboxaldehyde2,2-二氟-1,3-苯并二噁茂-5-甲醛