63620-51-9 AIDS-128238 AIDS128238 Carbamic acid, {[5,6,7,9-tetrahydro-1,2,} {3-trimethoxy-10-(methylthio)-9-oxobenzo[a]heptalen-7-yl]-,} ethyl ester, (S)- Ethyl 1,2,3-trimethoxy-10-(methylthio)-9-oxo-5,6,7,9-tetrahydrobenzo[a]heptalen-7-ylcarbamate NSC249278