5-tert-butyl 2-ethyl 6,7-dihydrothieno[3,2-c]pyridine-2,5(4H)-di

Ethyl 5-Boc-4,5,6,7-tetrahydrothieno[3,2-c]pyridine-2-carboxylate

5-tert-butyl 2-ethyl 4H,5H,6H,7H-thieno[3,2- c]pyridine-2,5-dicarboxylate

5-TERT-BUTYL 2-ETHYL 6,7-DIHYDROTHIENO[3,2-C]PYRIDINE-2,5(4H)-DICARBOXYLATE

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