75724-96-8
3-(chloroacetyl)phthalide
→
75724-92-4
2-(2-oxopropyl)benzoyl chloride
708-14-5
3-oxo-1H-2-benzofuran-1-carboxylic acid
129881-51-2
acid chloride of 1-oxo-1,3-dihydroisobenzofuran-3-carboxylic acid
528-46-1
2-(羧基羰基)苯甲酸
2852-91-7
2-(2-oxopropyl)benzoic acid