Title: Alachlor
CAS Registry Number: 15972-60-8
CAS Name: 2-Chloro-N-(2,6-diethylphenyl)-N-(methoxymethyl)acetamide
Additional Names: 2-chloro-2¢,6¢-diethyl-N-(methoxymethyl)acetanilide; metachlor
Manufacturers' Codes: CP-50144
Trademarks: Lasso (Monsanto); Alanex (Makhteshim-Agan)
Molecular Formula: C14H20ClNO2
Molecular Weight: 269.77
Percent Composition: C 62.33%, H 7.47%, Cl 13.14%, N 5.19%, O 11.86%
Literature References: Pre-emergence herbicide. Prepn: NL 6602564 (1967 to Monsanto), C.A. 67, 99832r (1967). Activity: D. M. Evans, Chem. Ind. (London) 1969, 615. Soil degradn: R. S. Hargrove, M. G. Merkle, Weed Sci. 19, 652 (1971). Mechanism of action: L. M. Deal, F. D. Hess, ibid. 28, 168 (1980).
Properties: Cryst solid, mp 40-41°. d2515.6 1.133. Soly in water at 23°: 140 mg/l. Sol in ether, acetone, benzene, ethanol, ethyl acetate. Hydrolyzed under strong acid or alkaline conditions. LD50 orally in rats: 1200 mg/kg (Evans).
Melting point: mp 40-41°
Density: d2515.6 1.133
Toxicity data: LD50 orally in rats: 1200 mg/kg (Evans)
Use: Herbicide.
Alafosfalin Alagebrium Chloride Alanine Alantolactone Alazopeptin

CAS number 15972-60-8 YesY
PubChem 2078
ChemSpider 1994 YesY
KEGG C10928 YesY
Jmol-3D images Image 1
Image 2
Molecular formula C14H20ClNO2
Molar mass 269.767 g/mol
Density 1.12 g/mL
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Except where noted otherwise, data are given for materials in their standard state (at 25 °C (77 °F), 100 kPa)
Infobox references

Alachlor is an herbicide from the chloroacetanilide family. Its mode of action is elongase inhibition, and inhibition of geranylgeranyl pyrophosphate (GGPP) cyclisation enzymes, part of the gibberellin pathway. It is marketed under the trade names Alanex, Bronco, Cannon, Crop Star, Intrro, Lariat, Lasso, Micro-Tech, and Partner.[1] Use of alachlor as a herbicide has been banned in the European Union.