143701-75-1

Basic information

• Product Name: 1-(METHYLSULFONYL-4-TRIFLUOROMETHYL PHENYL)-2-CYANO-3-CYCLOPROPYL PROPYL-1,3 DIO
• Synonyms: 1-(METHYLSULFONYL-4-TRIFLUOROMETHYL PHENYL)-2-CYANO-3-CYCLOPROPYL PROPYL-1,3 DIO;3-Cyclopr;benzenepr;RPA 202248;Isoxaflutole Metabolite B Standard;RPA 202248,100ppm
• CAS NO: 143701-75-1
• Molecular Formula: C₁₅H₁₂F₃NO₄S
• Molecular Weight: 359.3202896
• Mol File: 143701-75-1.mol
• Article Data: 6

Chemical Properties

• Boiling Point: 527.796°C at 760 mmHg
• Flash Point: 273.001°C
• Appearance: /
• Density: 1.461g/cm³
• Vapor Pressure: 0mmHg at 25°C
• Refractive Index: 1.528
• Storage Temp.: Refrigerator
• Solubility: Chloroform (Slightly), Methanol (Slightly)
• CAS DataBase Reference: 1-(METHYLSULFONYL-4-TRIFLUOROMETHYL PHENYL)-2-CYANO-3-CYCLOPROPYL PROPYL-1,3 DIO(CAS DataBase Reference)
• NIST Chemistry Reference: 1-(METHYLSULFONYL-4-TRIFLUOROMETHYL PHENYL)-2-CYANO-3-CYCLOPROPYL PROPYL-1,3 DIO(143701-75-1)
• EPA Substance Registry System: 1-(METHYLSULFONYL-4-TRIFLUOROMETHYL PHENYL)-2-CYANO-3-CYCLOPROPYL PROPYL-1,3 DIO(143701-75-1)

Safety Data

• Hazardous Substances Data: 143701-75-1(Hazardous Substances Data)

Usage

Uses

RPA 202248 is a derivative of isoxaflutole, a herbicide used for weed control.

InChI:InChI=1/C15H12F3NO4S/c1-24(22,23)12-6-9(15(16,17)18)4-5-10(12)14(21)11(7-19)13(20)8-2-3-8/h4-6,8,11H,2-3H2,1H3

Upstream product

• 141112-29-0 isoxaflutole 

Downstream Products

• 13885-13-7 2-cyclopropyl-2-oxoacetic acid 
• 142994-06-7 2-(methylsulphonyl)-4-trifluoromethylbenzoic acid 

Relevant articles and documents

Kinetics of chemical degradation of isoxaflutole: Influence of the nature of aqueous buffers (alkanoic acid/sodium salt vs phosphate)

A kinetic study of the chemical degradation of isoxaflutole (5-cyclopropyl-1,2-oxazol-4-ylααα-trifluoro-2-mesyl-p-tolyl ketone) into its diketonitrile derivative (DKN), which is its active herbicide principle, in organic buffers at different pH values was carried out using a HPLC/UV detection method. The values of the pseudo-first-order rate constants Kobs for the reaction were calculated and compared with those previously obtained in inorganic buffers. In both cases, Kobs was found to be dependent on pH and temperature, but at pH 5.2 the degradation of isoxaflutole in CH3COOH/CH3COONa buffers was considerably faster than in KH2PO4/Na2HPO4 buffers, indicating that the compound was sensitive to the nature of the reagents used to prepare buffered solutions. The influence of phosphate and acetate concentrations and the influence of the R-substituent in RCOOH/RCOONa buffers were investigated. For the HA/A- buffers studied, the values of Kobs were linearly dependent on HA and A- concentrations, which meant that the degradation of isoxaflutole was subject to general catalysis. The values of Kobs were also found to be dependent on the number and the position of the CH3 groups of the R-substituent. The known degradation product of DKN (a benzoic acid derivative) was not detected throughout this study.

Pesticide treatment

A method of accelerating the decomposition of an isoxazole and/or a dione pesticide by contacting them with halogen and/hypohalite. A crop seed containing a halogen and/or hypohalite within the seed or at its surface or in a coating on the seed.

Herbicidal 2-cyano-1,3-diones

Herbicides derived from 2-cyano-1,3-diones have the formula: STR1 wherein R, R1, R2 R3, R4 and R5 are as defined in the description. The compounds are intended for use pre- and post-emergence as selective herbicides in maize and a large number of other monocotyledon crops.