(S)-[5,6,7,9-TETRAHYDRO-1,2,3-TRIMETHOXY-10-(METHYLTHIO)-9-OXOBENZO[A]HEPTALEN-7-YL]CARBAMIC ACID, ETHYL ESTER 63620-51-9 Carbamic acid, [5,6,7,9-tetrahydro-1,2,3-trimethoxy-10-(methylthio)-9-oxobenzo[a]heptalen-7-yl]-, ethyl ester, (S)- NSC249278