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In ethyl N-[2-(hydroxy­acetyl)phenyl]carbamate, C11H13NO4, all of the non-H atoms lie on a mirror plane in the space group Pnma; the mol­ecules are linked into simple chains by a single C-H...O hydrogen bond. The mol­ecules of ethyl N-[2-(hydroxy­acetyl)-4-iodo­phenyl]carbamate, C11H12INO4, are linked into sheets by a combination of O-H...I and C-H...O hydrogen bonds and a dipolar I...O contact. Ethyl N-­[2-(hydroxy­acetyl)-4-methyl­phenyl]carbamate, C12H15NO4, crystallizes with Z' = 2 in the space group P\overline{1}; pairs of mol­ecules are weakly linked by an O-H...O hydrogen bond and these aggregates are linked into chains by two independent aromatic [pi]-[pi] stacking inter­actions.
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