13246-52-1
2,4-二氧代己酸乙酯
→
3376-96-3
2-乙基-(9ci)-4-吡啶羧酸
31718-05-5
ethyl 3-cyano-6-ethyl-2-oxo-1H-pyridine-4-carboxylate
54881-17-3
6-乙基-2-氧代-1,2-二氢-吡啶-4-羧酸
54881-18-4
2-ethyl-6-chloro-isonicotinic acid
717871-74-4
2-ethylpyridine-4-carbonyl chloride