67-56-1
甲醇
+
57381-94-9
2-Pentanone, 4-isocyanato-4-methyl- (9CI)
→
65330-08-7
methyl N-(2-methyl-4-oxopentan-2-yl)carbamate
27830-77-9
4,4,6-trimethyl-1,3-oxazinan-2-one