152362-00-0
ethyl 2-chloro-2-cyano-3-methyl-5-oxopentanoate
→
50839-95-7
2-chloro-4-methyl-pyridine-3-carbonyl chloride
50840-02-3
2-氯-4-甲基-烟酸乙酯
142266-63-5
2-氯-4-甲基烟酸