| 1 | 1198299-72-7 | 来那度胺杂质A | Lenalidomide Impurity 14 | C13H13N3O6
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| 2 | 335390-56-2 | ethyl 4-[(2,5-dioxo-1-pyrrolidinyl)amino]-3-nitrobenzoate | ethyl 4-[(2,5-dioxo-1-pyrrolidinyl)amino]-3-nitrobenzoate | C13H13N3O6
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| 3 | | ethyl (E)-4-[2-(3-nitrobenzoyl)hydrazino]-4-oxo-2-butenoate | ethyl (E)-4-[2-(3-nitrobenzoyl)hydrazino]-4-oxo-2-butenoate | C13H13N3O6
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| 4 | | 2-[4-methyl-4-(4-nitrophenyl)-2,5-dioxoimidazolidin-1-yl]propanoic acid | 2-[4-methyl-4-(4-nitrophenyl)-2,5-dioxoimidazolidin-1-yl]propanoic acid | C13H13N3O6
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| 5 | 353262-63-2 | 2-{4-nitro-1,3-dioxo-1,3-dihydro-2H-isoindol-2-yl}ethyl dimethylcarbamate | 2-{4-nitro-1,3-dioxo-1,3-dihydro-2H-isoindol-2-yl}ethyl dimethylcarbamate | C13H13N3O6
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| 6 | 295357-73-2 | 2H-Isoindole-2-acetic acid, α-(3-amino-3-oxopropyl)-1,3-dihydro-4-nitro-1-oxo- | 2H-Isoindole-2-acetic acid, α-(3-amino-3-oxopropyl)-1,3-dihydro-4-nitro-1-oxo- | C13H13N3O6
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| 7 | 120788-71-8 | dimethyl 1,3-dimethyl-2,4-dioxo-1,2,3,4-tetrahydropyrido[2,3-d]pyrimidine-5,6-dicarboxylate | dimethyl 1,3-dimethyl-2,4-dioxo-1,2,3,4-tetrahydropyrido[2,3-d]pyrimidine-5,6-dicarboxylate | C13H13N3O6
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