19786-58-4
5-氧代氮杂烷-1,4-二羧酸二乙酯
→
53658-58-5
5,6,7,8-tetrahydro-4H-[1,2]oxazolo[4,5-d]azepin-3-one
53601-34-6
53601-33-5
53601-35-7
3-oxo-2,3,4,5,7,8-hexahydro-isoxazolo[4,5-d]azepine-6-carboxylic acid ethyl ester