Mefenpyr-diethyl

吡唑解草酯

Also known as: 1-(2,4-Dichlorophenyl)-4,5-dihydro-5-methyl-1H-pyrazole-3,5-dicarboxylic acid diethyl ester, Diethyl 1-(2,4-dichlorophenyl)-4,5-dihydro-5-methyl-1H-pyrazole-3,5-dicarboxylate, Diethyl 1-(2,4-dichlorophenyl)-5-methyl-4,5-dihydro-1H-pyrazole-3,5-dicarboxylate, Diethyl 1-(3,4-dichlorophenyl)-5-methyl-2-pyrazoline-3,5-dicarboxylate, EMBARK, HOE-107892, MFCD01867434, Mefenpyr-diethyl [ISO], rac-diethyl (5R)-1-(2,4-dichlorophenyl)-5-methyl-4,5-dihydro-1H-pyrazole-3,5-dicarboxylate

Mefenpyr-diethyl (CAS 135590-91-9) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C16H18Cl2N2O4 and a molecular weight of 373.231 g/mol. It is also known as 1-(2,4-Dichlorophenyl)-4,5-dihydro-5-methyl-1H-pyrazole-3,5-dicarboxylic acid diethyl ester, Diethyl 1-(2,4-dichlorophenyl)-4,5-dihydro-5-methyl-1H-pyrazole-3,5-dicarboxylate and Diethyl 1-(2,4-dichlorophenyl)-5-methyl-4,5-dihydro-1H-pyrazole-3,5-dicarboxylate. Key properties include a melting point of 52 °C, a boiling point of 451.1±55.0 °C at 760 mmHg, a density of 1.3±0.1 g/cm3 and a flash point of 226.6±31.5 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.

135590-91-9

Jingsj CID

J-27664-5

Molecular Formula

C₁₆H₁₈Cl₂N₂O₄

Chinese Name

吡唑解草酯

Molecular Weight

373.231 g/mol

Category

Pharma Intermediates

Last updated

8/21/2026