Prothioconazole
Title: Prothioconazole
CAS Registry Number: 178928-70-6
CAS Name: 2-[2-(1-Chlorocyclopropyl)-3-(2-chlorophenyl)-2-hydroxypropyl]-1,2-dihydro-3H-1,2,4-triazole-3-thione
Additional Names: 2-(1-chlorocyclopropyl)-1-(2-chlorophenyl)-3-(5-mercapto-1,2,4-triazol-1-yl)propan-2-ol
Manufacturers' Codes: JAU-6476
Trademarks: Proline (Bayer CropSci.); Redigo (Bayer CropSci.)
Molecular Formula: C14H15Cl2N3OS
Molecular Weight: 344.26
Percent Composition: C 48.84%, H 4.39%, Cl 20.60%, N 12.21%, O 4.65%, S 9.31%
Literature References: Fungal sterol demethylation inhibitor. Prepn: M. Jautelat et al., DE 19528046; eidem, US 5789430 (1996, 1998 both to Bayer). Comprehensive description: A. Mauler-Machnik et al., BCPC Conf. - Pests Dis. 2002, 389-394.
Properties: White to light beige crystalline powder. mp 139.1-144.5°. Vapor pressure (20°): < 4´10-7 Pa. pKa: 6.9. Log P (octanol/water): 4.05 (unbuffered at 20°). Soly in water (20°): 0.3 g/l. LD50 in rats (mg/kg): > 6200 orally; > 2000 dermally. LC50 in rats (mg/m3): > 4990 by inhalation. LC50 (96 hr) in rainbow trout: 1.83 mg/l (Mauler-Machnik).
Melting point: mp 139.1-144.5°
pKa: pKa: 6.9
Log P: Log P (octanol/water): 4.05 (unbuffered at 20°)
Toxicity data: LD50 in rats (mg/kg): > 6200 orally; > 2000 dermally; LC50 in rats (mg/m3): > 4990 by inhalation; LC50 (96 hr) in rainbow trout: 1.83 mg/l (Mauler-Machnik)
Use: Agricultural fungicide.

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