2-Chloro-2-oxoacetic Acid Methyl Ster; Chloroglyoxylic Acid Methyl Ster; Methoxalyl Chloride; Methyl (Chlorocarbonyl)formate; Methyl (Chloroformyl)formate; Methyl 2-Chloro-2-oxoacetate; Methyl Chloroglyoxylate; Methyl Chlorooxalate; Methyl Oxalyl Chloride; Monomethyl Oxalate Chloride; Monomethyl Oxalate Monochloride; Oxalic Acid Methyl Ster Chloride; Oxalic Acid Monomethyl Ster Chloride;