50-00-0
甲醛
+
39265-95-7
3,3-二乙酰基丙酸甲酯
→
~78%
6277-50-5
methyl 3-methylidene-4-oxopentanoate
60971-98-4
methyl 5-hydroxy-4,5-dimethyl-2-oxofuran-3-carboxylate
60971-97-3
2,5-dihydro-5-hydroxy-4,5-dimethyl-2-oxo-3-furancarboxylic acid