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Cumyluron is a urea herbicide used to control grasses which also has a safening effect in rice especially against sulfonylurea herbicides. It has a low aqueous solubility and is not volatile. It is moderately toxic to fish but less so to birds. Data for other biodiversity is missing. Cumyluron is moderately toxic to mammals via the oral route. There is some evidence to suggest it is a possible human carcinogen.

ChEBI: Cumyluron is an alkylbenzene.

Cumyluron is commercially produced via the synthesis of 1-[(2-chlorophenyl)methyl]-3-(1-methyl-1-phenylethyl)urea, achieved through condensation of substituted benzylamines with isocyanates or carbamoyl chlorides under controlled conditions.

Disrupts the fatty acid elongase (FAT) enzyme process crucial for plant cell wall synthesis

Herbicide