192933-53-2
N-(2-羧基苯基)-5-O-磷羧基-β-D-呋喃核糖基胺
→
~45%
192933-54-3
5-formyl-6-methylpyrazine-2,3-dicarbonitrile
52197-12-3
2,3-二氰基-5-甲基吡嗪