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CAS NO:142689-03-0
CAS:
142689-03-0
英文名称:
3h-2-benzopyran-7-carboxylic acid, 4,6-dihydro-5-chloro-8-hydroxy-3-methyl-6-ox
o-4- (trifluoromethyl)-
4,6-dihydro-5-chloro-8-hydroxy-3-methyl-6-oxo-4- (trifluoromethyl)-3h-2-benzopyran-7-carboxylic aci