72031-29-9
4-Chloro-7,7-dimethyl-9-oxo-6,7,8,9-tetrahydropyrimido[4,5-b](1,4)benzothiazine
+
103-76-4
1-(2-羟乙基)哌嗪
→
~88%
89513-68-8
4-[4-(2-hydroxyethyl)piperazin-1-yl]-7,7-dimethyl-6,8-dihydro-5H-pyrimido[4,5-b][1,4]benzothiazin-9-one,hydrochloride