A racemate composed of equimolar amounts of (R)- and (S)-dimethenamid. A herbicide, it is applied to the soil for the control of various broad-leaved weeds and grasses. Only the S enantiomer (generally known as dimethenamid-P) is active. ChEBI: 2-chloro-N-(2,4-dimethylthiophen-3-yl)-N-(1-methoxypropan-2-yl)acetamide is an organochlorine compound that is 2-chloroacetamide substituted by a 2,4-dimethylthiophen-3-yl and a 1-methoxypropan-2-yl group at the nitrogen atom. It is a member of thiophenes, an aromatic amide, an ether and an organochlorine compound.