617-35-6
丙酮酸乙酯
+
4301-14-8
乙炔基溴化镁
→
~25%
20441-73-0
ethyl 2-hydroxy-2-methylbut-3-ynoate
20521-46-4
Schwefligsaeure-bis-(1-methyl-1-ethoxycarbonyl-propin-(2)-ylester)
33471-40-8
4-甲基-3(2H)-哒嗪酮