54953-79-6
5,5-二甲基-[1,3]氧杂-2-酮
55004-75-6
4-hydroxy-7,8-dimethylchromen-2-one
55005-28-2
6-乙基-4-羟基香豆素
55041-22-0
3-amino-5-methyl-1,3-oxazolidin-2-one
55041-23-1
3-amino-5-phenyl-1,3-oxazolidin-2-one

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