3153-37-5 Butanoic acid, 4-chloro-, methyl ester Butyric acid, 4-chloro-, methyl ester (8CI) EINECS 221-592-9 Methyl 4-chlorobutanoate Methyl 4-chlorobutyrate Methyl omega-chlorobutyrate NSC 66271 gamma-Chlorobutyric acid methyl ester