6,7-Dihydrothieno[3,2-c]pyridine-2,5(4H)-dicarboxylic acid 5-(1,1-dimethylethyl) 2-ethyl ester

6,7-dihydrothieno[3,2-c]pyridine-2,5(4h)-dicarboxylic acid 5-(1,1-dimethylethyl) 2-ethyl ester ; 5-tert-butyl 2-ethyl 6,7-dihydrothieno[3,2-c]pyridine-2,5(4h)-di ; 6,7-dihydro-4h-thieno[3,2-c]pyridine-2,5-dicarboxylic acid 5-tert-butyl ester 2-ethyl ester ; 6,7-dihydro-4h-thiazolo[5,4-c]pyridine-2,5-dicarboxylic acid 5-tert-butyl ester 2-ethyl ester ; 5-tert-butyl 2-ethyl 4h,5h,6h,7h-thieno[3,2- c]pyridine-2,5-dicarboxylate ; ethyl 5-boc-4,5,6,7-tetrahydrothieno[3,2-c]pyridine-2-carboxylate ; 5-tert-butyl 2-ethyl 6,7-dihydrothieno[3,2-c]pyridine-2,5(4h)-dicarboxylate ; thieno[3,2-c]pyridine-2,5(4h)-dicarboxylic acid, 6,7-dihydro-, 5-(1,1-dimethylethyl) 2-ethyl ester