Pyraclostrobin
Title: Pyraclostrobin
CAS Registry Number: 175013-18-0
CAS Name: [2-[[[1-(4-Chlorophenyl)-1H-pyrazol-3-yl]oxy]methyl]phenyl]methoxycarbamic acid methyl ester
Additional Names: methyl N-[2-[[1-(4-chlorophenyl)-1H-pyrazol-3-yl]oxymethyl]phenyl]-N-methoxycarbamate
Manufacturers' Codes: BAS-500F
Trademarks: Cabrio (BASF); Comet (BASF); Headline (BASF)
Molecular Formula: C19H18ClN3O4
Molecular Weight: 387.82
Percent Composition: C 58.84%, H 4.68%, Cl 9.14%, N 10.83%, O 16.50%
Literature References: Strobilurin fungicide for use in seed grass and food crops. Prepn: B. Müller et al., DE 4423612; eidem, US 5869517 (1996, 1999 both to BASF). Comprehensive description: E. Ammermann et al., Brighton Crop Prot. Conf. - Pests Dis. 2000, 541-548. Review of activity and field trials: R. Stierl et al., ibid. 859-864.
Properties: White or light beige crystalline solid, mp 63.7-65.2°. Vapor pressure at 20°: 2.6 ´ 10-8 Pa. Log P (n-octanol/water) at 22°: 3.99. Soly in water (20°): 1.9 mg/l. LD50 in rats (mg/kg): >5000 orally; >2000 dermally; LC50 in rainbow trout: 0.006 mg/l (Ammermann).
Melting point: mp 63.7-65.2°
Log P: Log P (n-octanol/water) at 22°: 3.99
Toxicity data: LD50 in rats (mg/kg): >5000 orally; >2000 dermally; LC50 in rainbow trout: 0.006 mg/l (Ammermann)
Use: Agricultural fungicide.

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