2-{4-[(1,1-Dioxidotetrahydro-3-thiophenyl)carbamothioyl]-1-piperazinyl}-8-ethyl-5-oxo-5,8-dihydropyrido[2,3-d]pyrimidine-6-carboxylic acid

2-{4-[(1,1-Dioxidotetrahydro-3-thiophenyl)carbamothioyl]-1-piperazinyl}-8-ethyl-5-oxo-5,8-dihydropyrido[2,3-d]pyrimidin-6-carbonsäure

2-{4-[(1,1-Dioxidotetrahydro-3-thiophenyl)carbamothioyl]-1-piperazinyl}-8-ethyl-5-oxo-5,8-dihydropyrido[2,3-d]pyrimidine-6-carboxylic acid

Acide 2-{4-[(1,1-dioxydotétrahydro-3-thiophényl)carbamothioyl]-1-pipérazinyl}-8-éthyl-5-oxo-5,8-dihydropyrido[2,3-d]pyrimidine-6-carboxylique

Pyrido[2,3-d]pyrimidine-6-carboxylic acid, 8-ethyl-5,8-dihydro-5-oxo-2-[4-[[(tetrahydro-1,1-dioxido-3-thienyl)amino]thioxomethyl]-1-piperazinyl]-

2-(4-{[(1,1-dioxothiolan-3-yl)amino]thioxomethyl}piperazinyl)-8-ethyl-5-oxo-8-hydropyridino[2,3-d]pyrimidine-6-carboxylic acid

2-[4-(1,1-Dioxo-tetrahydro-1λ*6*-thiophen-3-ylthiocarbamoyl)-piperazin-1-yl]-8-ethyl-5-oxo-5,8-dihydro-pyrido[2,3-d]pyrimidine-6-carboxylic acid