Synonyms: 3-Thiophenemalonicacid, tetrahydro-, diethyl ester, 1,1-dioxide (7CI,8CI); Propanedioic acid,(tetrahydro-1,1-dioxido-3-thienyl)-, diethyl ester (9CI); Propanedioic acid,(tetrahydro-3-thienyl)-, diethyl ester, S,S-dioxide; Diethyl3-sulfolanemalonate; Diethyl 3-sulfolanylmalonate; NSC 152574