Common name: S-metolachlor（CAS NO: 87392-12-9）

IUPAC name: mixture of 80–100% 2-chloro-N-(6-ethyl-o-tolyl)-N-[(1S)-2-methoxy-1-methylethyl]acetamide and 20–0% 2-chloro-N-(6-ethyl-o-tolyl)-N-[(1R)-2-methoxy-1-methylethyl]acetamide 
or 
mixture of 80–100% (ars,1S)-2-chloro-6′-ethyl-N-(2-methoxy-1-methylethyl)acet-o-toluidide and 20–0% (ars,1R)-2-chloro-6′-ethyl-N-(2-methoxy-1-methylethyl)acet-o-toluidide

Chemical Abstracts name: 2-chloro-N-(2-ethyl-6-methylphenyl)-N-[(1S)-2-methoxy-1-methylethyl]acetamide

CAS No: 87392-12-9

Mode of action: 
Selective systemic herbicide, absorbed mainly via emerging shoot and partly through root. Belong to chloracetamide herbicide, inhibits mitosis and cell division. Contain only the s-isomer(herbicidal active isomer) compared to metolachlor which have two isomers of R and S, so better efficacy can be get from application of s-metolachlor compared to metolachlor at same rate and content.

Application:  
Control of annual grassy weeds and certain small-seeded broadleaves on many crops like corn, soybean, cotton, tobacco, potato, sorghum, oilseed rape, sunflowers, sugar beet, watermelon and so on. Can be used pre-plant, pre-emergence or early post-emergence. Post-emergence applications should be made before grasses exceed the 2 leaf stage. The product provides 4-6 weeks residual activity against newly emerging weeds. 
Seed treatment with herbicide safener fluxofenim can protect sorghum from injury by S-metolachlor based product.

Formulation types: 
S-metolachlor 97% TC
S-metolachlor 96% EC

Packing: 10ML-200L for liquid formulations, 1G-25KG for solid formulations.