67-56-1
甲醇
+
43193-60-8
吡嗪四羧酸
→
~69%
35042-21-8
四甲基吡嗪-2,3,5,6-四羧酸
221171-89-7
dimethyl 2-bromo-2H-azirine-2,3-dicarboxylate
~2%
221171-82-0
64995-84-2
dimethyl 2-oxo-3-triphenylphosphoranylidenebutanedioate