1092279-03-2

1-Boc-octahydrothieno[3,4-b]pyrazine 6,6-Dioxide tert-butyl hexahydrothieno[3,4-b]pyrazine-1(2H)-carboxylate 6,6-dioxide tert-butyl 6,6-dioxo-2,3,4a,5,7,7a-hexahydro-1H-thieno[3,4-b]pyrazine-4-carboxylate Thieno[3,4-b]pyrazine-1(2H)-carboxylic acid, hexahydro-, 1,1-dimethylethyl ester, 6,6-dioxide