| Approval: | ISO | 
|---|---|
| IUPAC PIN: | rac-(5R)-1-(2,4-dichlorophenyl)-5-methyl-4,5-dihydro-1H-pyrazole-3,5-dicarboxylic acid | 
| IUPAC name: | (RS)-1-(2,4-dichlorophenyl)-5-methyl-2-pyrazoline-3,5-dicarboxylic acid | 
| CAS name: | 1-(2,4-dichlorophenyl)-4,5-dihydro-5-methyl-1H-pyrazole-3,5-dicarboxylic acid | 
| CAS Reg. No.: | 135591-00-3 | 
| Formula: | C12H10Cl2N2O4 | 
| Activity: | herbicide safeners | 
| Notes: | Derivatives include mefenpyr-diethyl [135590-91-9]. | 
| Structure: | |
| Pronunciation: | mě-fěn-pīr Guide to British pronunciation | 
| InChIKey: | XEJNEDVTJPXRSM-UHFFFAOYSA-N | 
| InChI: | InChI=1S/C12H10Cl2N2O4/c1-12(11(19)20)5-8(10(17)18)15-16(12)9-3-2-6(13)4-7(9)14/h2-4H,5H2,1H3,(H,17,18)(H,19,20) | 
A data sheet from the Compendium of Pesticide Common Names