126728-19-6
N-(2-chloro-3-pyridinecarbonyl)-S-methyl-pseudothiourea
→
~89%
126728-17-4
2-(methylthio)pyrido[2,3-d]pyrimidin-4(3H)-one hydrochloride
21038-66-4
吡啶并[2,3-D]嘧啶-2,4(1H,3H)-二酮