4933. Indanofan

Nomenclature

CAS number: 133220-30-1
2-[[2-(3-Chlorophenyl)oxiranyl]methyl]-2-ethyl-1H-indene-1,3(2H)-dione; MK-243; MX-70906; NH-502; Trebiace (Mitsubishi).
C20H17ClO3; mol wt 340.80.
C 70.49%, H 5.03%, Cl 10.40%, O 14.08%.

Description and references

Herbicide developed for use in paddy rice and turf. Prepn: T. Jikihara et al., EP 398258; eidem, US 5076830 (1990, 1991 both to Mitsubishi); K. Tanaka et al., Synthesis 1999, 249. Review of physical and biological properties: K. Yagi, K. Inoue, Agrochem. Jpn. 76, 12-14 (2000).

Chemical structure

Properties

Colorless crystals from methanol-water, mp 60.4-61.3°; also reported as off-white crystals. Soly in water at 25°: 17.1 mg/l. Vapor pressure at 25°: 2.8 × 106 Pa. LD50 male, female rats (mg/kg): 631, 460 orally; >2000, >2000 dermally. LC50 in rats (mg/l): 1.57 by inhalation (Yagi).

Use

Herbicide.