1173165-20-2
→
~89%
33471-40-8
4-甲基-3(2H)-哒嗪酮
87668-16-4
2,3-dihydro-4-methyl-3-oxopyridazine-6-carboxylic acid
~79%
105537-87-9
4-methyl-4,5-dihydro-3(2H)-pyridazinone
~47%
20441-73-0
ethyl 2-hydroxy-2-methylbut-3-ynoate
+
92604-87-0
859956-15-3
5-methyl-6-oxo-1,4,5,6-tetrahydro-pyridazine-3-carboxylic acid
105537-47-1
ethyl 2-methyl-4,4-diethoxybutanoate
61892-47-5
3-甲基-4-羟基-4-丁内酯