1030. Benalaxyl

Nomenclature

CAS number: 71626-11-4
N-(2,6-Dimethylphenyl)-N-(phenylacetyl)-dl-alanine methyl ester; methyl N-phenylacetyl-N-2,6-xylyl-dl-alaninate; N-(2,6-dimethylphenyl)-N-(1-carbomethoxyethyl)phenylacetamide; M-9834; Galben (Isagro).
C20H23NO3; mol wt 325.40.
C 73.82%, H 7.12%, N 4.30%, O 14.75%.

Description and references

Acylalanine fungicide systemically active against phytopathogens of the order Peronosporales. Prepn: E. Boson et al., DE 2903612; eidem, US 4425357 (1978, 1984 both to Montedison). Activity and toxicology: P. Bergamaschi et al., Proc. Br. Crop Prot. Conf. - Pests Dis. 1981, 19. Residue accumulation in edible crops: P. Cabras et al., J. Agric. Food Chem. 33, 86 (1985). GC-MS study: B. D. Ripley, ibid. 560.

Chemical structure

Properties

Crystals from ligroin, mp 78-80°. LD50 in rats (mg/kg): 4200 orally; 1100 i.p. LC50 (96 hr) in rainbow trout: 3.75 mg/l (Bergamaschi).

Use

Agricultural fungicide.