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Doxophylline
![Iopachol impurity B (5-[(hydroxyacetyl)amino]-N,N'-bis[2-hydroxy-1-(hydroxymethyl)ethyl]-2,4,6-triiodobenzene-1,3-dicarboxamide)](/upload/image/thumb/1_300_300_nopic.jpg)
Iopachol impurity B (5-[(hydroxyacetyl)amino]-N,N'-bis[2-hydroxy-1-(hydroxymethyl)ethyl]-2,4,6-triiodobenzene-1,3-dicarboxamide)
