4-Carbomethoxy-2,3,4,5-tetrahydro-3-thiophenone; 4-Carbomethoxy-3-thiophanone; 4-Oxotetrahydrothiophene-3-carboxylic Acid Methyl Ester; Methyl 4-Oxo-2,3,4,5-tetrahydrothiophene-3-carboxylate; Methyl 4-Oxotetrahydrothienyl-3-carboxylate; Methyl 4-Oxotetrahydrothiophene-3-carboxylate; Methyl Tetrahydro-4-oxo-3-thiophenecarboxylate; NSC 127560

Used in the preparation of a new class of neuroleptic agents.