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CAS No 135590-91-9 , diethyl 1-(2,4-dichlorophenyl)-5-methyl-4H-pyrazole-3,5-dicarboxylate

  • Name: diethyl 1-(2,4-dichlorophenyl)-5-methyl-4H-pyrazole-3,5-dicarboxylate
  • Synonyms: 1-(2,4-Dichlorophenyl)-4,5-dihydro-5-methyl-1H-pyrazole-3,5-dicarboxylic acid diethyl ester;diethyl 1-(2,4-dichlorophenyl)-5-methyl-4H-pyrazole-3,5-dicarboxylate;135590-91-9;
  • CAS Registry Number:
  • Transport: UN 3077
  • Density: 1.34 g/cm3
  • Refractive index: 1.576
  • Safety Statements: R51/53
  • Hazard Symbols: N: Dangerous for the environment;
  • Molecular Weight: 373.23112
  • InchiKey: OPGCOAPTHCZZIW-UHFFFAOYSA-N
  • InChI: InChI=1S/C16H18Cl2N2O4/c1-4-23-14(21)12-9-16(3,
    15(22)24-5-2)20(19-12)13-7-6-10(17)8-11(13)18/h6-8H,4-5,9H2,1-3H3
  • Risk Statements: S60;S61
  • Molecular Formula: C16H18Cl2N2O4
  • Molecular Structure:CAS No:135590-91-9 diethyl 1-(2,4-dichlorophenyl)-5-methyl-4H-pyrazole-3,5-dicarboxylate

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References of diethyl 1-(2,4-dichlorophenyl)-5-methyl-4H-pyrazole-3,5-dicarboxylate
Title: Mefenpyr-diethyl
CAS Registry Number: 135590-91-9
CAS Name: 1-(2,4-Dichlorophenyl)-4,5-dihydro-5-methyl-1H-pyrazole-3,5-dicarboxylic acid diethyl ester
Synonyms: diethyl 1-(2,4-dichlorophenyl)-5-methyl-2-pyrazoline-3,5-dicarboxylate
Manufacturers' Codes: AE-F107892; HOE-107892
Molecular Formula: C16H18Cl2N2O4
Molecular Weight: 373.23
Percent Composition: C 51.49%, H 4.86%, Cl 19.00%, N 7.51%, O 17.15%
Literature References: Herbicide safener that enhances metabolism of herbicides and exhibits selective control of grass weeds in wheat and barley. Prepn: W. R?sch et al., WO 9107874; eidem, US 5700758 (1991, 1997 both to Hoechst). Comprehensive description: E. Hacker et al., Brighton Crop Prot. Conf. - Weeds 1999, 15-22. Effects on glutathione S-transferase activity on dark-grown barley: R. Scalla, A. Roulet, Physiol. Plant. 116, 336 (2002). Field study of mixture with iodosulfuron-methyl-sodium in barley: S. R. King, E. S. Hagood, Jr., Weed Technol. 19, 372 (2005).
Properties: mp 50-52°. Vapor pressure at 25°: 1.4 ′ 10-5 Pa. Soly in water (20°): 20 mg/ml (pH 6.2). Log P (octanol/water): 3.83 (pH 6.3, 21°). LD50 in rats (mg/kg): >5000 orally, >4000 dermally; LC50 in carp (mg/l): 2.4 (Hacker).
Melting point: mp 50-52°
Toxicity data: Log P (octanol/water): 3.83 (pH 6.3, 21°). LD50 in rats (mg/kg): >5000 orally, >4000 dermally; LC50 in carp (mg/l): 2.4 (Hacker)
Use: Herbicide safener.