英文同义词: | 7-Cyclopropyl-1-ethyl-2-mercapto-4-oxo-1,4-dihydropyrido[2,3-d]pyrimidine-5-carboxylic acid;7-Cyclopropyl-1-ethyl-4-oxo-2-thioxo-1,2,3,4-tetrahydropyrido[2,3-d]pyrimidine-5-carboxylic acid;Pyrido[2,3-d]pyrimidine-5-carboxylic acid, 7-cyclopropyl-1-ethyl-1,2,3,4-tetrahydro-4-oxo-2-thioxo- |