Ethyl N-[2-(4-phen­oxy­phen­oxy)eth­yl]carbamate

The title compound, C₁₇H₁₉NO₄, which is a non-toxic insect growth regulator with the common name fenoxycarb, contains two independent and conformationally different mol­ecules in the asymmetric unit. Although the inter-ring dihedral angles are similar [62.21 (15) and 63.00 (14)°], the side-chain orientations differ. In the crystal, the mol­ecules are linked through N—H...O hydrogen-bonding associations, giving chains which extend along [110], while intra- and inter­molecular aromatic C—H...π inter­actions give sheet structures parallel to [110].