Acylurea

Acylureas (also called N-acylureas or ureides) are a class of chemical compounds formally derived from the acylation of urea.

They act as insect growth regulators by inhibiting the synthesis of chitin resulting in weakened cuticles and preventing molting.

[2] Members of this class include diflubenzuron, flufenoxuron, hexaflumuron, lufenuron, and teflubenzuron.

The acylurea functional group is also found in some pharmaceutical drugs such as the anticonvulsants phenacemide, pheneturide, chlorphenacemide, and acetylpheneturide (which are phenylureides),[3] and the sedatives acecarbromal, bromisoval, and carbromal (which are bromoureides).

[5] A diureide is a complex nitrogenous substance regarded as containing two molecules of urea or their radicals, e.g. uric acid or allantoin.