78-85-3
2-甲基丙烯醛
→
~89%
1920-21-4
2,5-dimethyl-3,4-dihydropyran-2-carbaldehyde
108-31-6
马来酸酐
+
~9%
107-25-5
乙烯基甲醚
38328-65-3
2-methoxy-5-methyl-3,4-dihydro-2H-pyran