英文别名2,6-DICHLOROPHENYLACETIC ACID METHYL ESTER; METHYL 2,6-DICHLOROPHENYLACETATE; 2,6-Dichlorobenzeneacetic acid methyl ester; Guanfacine Methyl Ester Impurity; Guanfacine Impurity 3; 2,2'-Dichlorophenylacetic acid methyl ester; Methyl α,2-dichlorobenzeneacetate; Methyl (2,6-dichlorophenyl)acetate; Benzeneacetic acid, 2,6-dichloro-, methyl ester; Methyl chloro(2-chlorophenyl)acetate