Mefenpyr-diethyl
- CAS No.
- 135590-91-9
- Chemical Name:
- Mefenpyr-diethyl
- Synonyms
- Mefenpyr-diethy;HOE-107892;EMBARK;1-(3,4-Dic;Mefenpyr-dieth;MEFENPYR-DIETHYL;Mefenpyr-diethyl >Mefenpyr-diethyl [iso];Mefenpyr-diethyl Standard;Oxymetazoline Impurity 17
- CBNumber:
- CB7190999
- Molecular Formula:
- C16H18Cl2N2O4
- Molecular Weight:
- 373.23
- MDL Number:
- MFCD09753375
- MOL File:
- 135590-91-9.mol
- MSDS File:
- SDS
- TDS File:
- TDS
| Melting point | 50-52° |
|---|---|
| Boiling point | 451.1±55.0 °C(Predicted) |
| Density | 1.34±0.1 g/cm3(Predicted) |
| vapor pressure | 0-0.001Pa at 20-50℃ |
| storage temp. | Sealed in dry,Room Temperature |
| solubility | Chloroform (Slightly), Methanol (Slightly) |
| pka | -5.89±0.70(Predicted) |
| form | Solid |
| color | Off-White to Light Beige |
| Water Solubility | Water: < 0.1 mg/mL (insoluble) |
| Henry's Law Constant | 3.8×103 mol/(m3Pa) at 25℃, Maniere et al. (2011) |
| Major Application |
agriculture environmental |
| 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 |
| InChIKey | OPGCOAPTHCZZIW-UHFFFAOYSA-N |
| SMILES | N1(C2=CC=C(Cl)C=C2Cl)C(C)(C(OCC)=O)CC(C(OCC)=O)=N1 |
| LogP | 4 at 25℃ and pH4-9 |
| CAS DataBase Reference | 135590-91-9(CAS DataBase Reference) |
| FDA UNII | RHH2Z9715C |
| NIST Chemistry Reference | Mefenpyr-diethyl(135590-91-9) |
| EPA Substance Registry System | Mefenpyr-diethyl (135590-91-9) |
| Pesticides Freedom of Information Act (FOIA) | Mefenpyr-diethyl |
| UNSPSC Code | 41116107 |
| NACRES | NA.24 |
SAFETY
Risk and Safety Statements
| Symbol(GHS) |  GHS09 |
|||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Signal word | Warning | |||||||||
| Hazard statements | H411 | |||||||||
| Precautionary statements | P273-P391-P501 | |||||||||
| Hazard Codes | N | |||||||||
| Risk Statements | 51/53 | |||||||||
| Safety Statements | 60-61 | |||||||||
| RIDADR | UN 3077 | |||||||||
| WGK Germany | 3 | |||||||||
| RTECS | UQ6473000 | |||||||||
| HS Code | 2933.19.4300 | |||||||||
| HazardClass | 9 | |||||||||
| PackingGroup | III | |||||||||
| Storage Class | 11 - Combustible Solids | |||||||||
| Hazard Classifications | Aquatic Chronic 2 | |||||||||
| Toxicity | 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) | |||||||||
| REACH Registrations | Active | |||||||||
| NFPA 704 |
|
Mefenpyr-diethyl price More Price(42)
| Manufacturer | Product number | Product description | CAS number | Packaging | Price | Updated | Buy |
|---|---|---|---|---|---|---|---|
| Sigma-Aldrich | CRM46302 | Mefenpyr-diethyl certified reference material, TraceCERT?, Manufactured by: Sigma-Aldrich Production GmbH, Switzerland | 135590-91-9 | 50MG | $92.7 | 2026-04-30 | Buy |
| Sigma-Aldrich | 46302 | Mefenpyr-diethyl PESTANAL | 135590-91-9 | 100mg | $135 | 2026-04-30 | Buy |
| TCI Chemical | M2604 | Mefenpyr-diethyl >98.0%(HPLC) | 135590-91-9 | 1g | $76 | 2026-04-30 | Buy |
| TCI Chemical | M2604 | Mefenpyr-diethyl >98.0%(HPLC) | 135590-91-9 | 5g | $228 | 2026-04-30 | Buy |
| ChemScene | CS-0128852 | Mefenpyr-diethyl 99.45% | 135590-91-9 | 1g | $27 | 2026-06-04 | Buy |
Mefenpyr-diethyl Chemical Properties,Uses,Production
Description
Mefenpyr-diethyl is a foliar-acting safener of the pyrazoline chemical group, and after its absorption, the metabolization and detoxification of herbicides occur in treated plants. It is often used with fenoxaprop-P-ethyl and iodosulfuron for selective weed control in cereals. However, it does not have herbicidal activity.
Uses
Mefenpyr-diethyl is used in herbicidal and herbicide-safener combinations as a resistant breaking solution for modern agriculture.
Uses
Herbicide safener.
Synthesis
97-63-2
![ethyl chloro[(2,4-dichlorophenyl)hydrazono]acetate](/CAS/20180711/GIF/27143-12-0.gif)
27143-12-0
135590-91-9
The general procedure for the synthesis of diethyl 1-(2,4-dichlorophenyl)-5-methyl-4,5-dihydro-1H-pyrazole-3,5-dicarboxylate from ethyl methacrylate and ethyl 2-chloro-2-(2-(2,4-dichlorophenyl)hydrazinylidene)acetate was as follows: 22.8 g of ethyl methacrylate and 14.8 g of 2-chloro-2-(2-(2,4-dichlorophenyl) hydrazinyl) ethyl acetate were mixed and heated to 50-60 °C. Over 30 minutes, 7.6 g of triethylamine was slowly added dropwise to the reaction mixture. Subsequently, the reaction temperature was raised to 70 °C and the reaction was continued with stirring for 2 hours. After completion of the reaction, the reaction mixture was allowed to cool to room temperature and the precipitate was isolated by filtration. The filtrate was carefully concentrated under reduced pressure to afford 18.1 g of the target product 1-(2,4-dichlorophenyl)-5-methyl-4,5-dihydro-1H-pyrazole-3,5-dicarboxylic acid diethyl ester.
References
[1] Patent: WO2017/92466, 2017, A1. Location in patent: Page/Page column 11
Mefenpyr-diethyl Preparation Products And Raw materials
Raw materials
Preparation Products
| Supplier | Tel | Country | ProdList | Advantage | |
|---|---|---|---|---|---|
| Huizhili (Changzhou) Life Technology Co., Ltd | 13906110102 | 13906110102@139.com | China | 15 | 58 |
| J & K SCIENTIFIC LTD. | 18210857532 18210857532 | jkinfo@jkchemical.com | China | 96815 | 76 |
| Adamas Reagent, Ltd. | 400-6009262 15618770481 | yhx@titansci.com | China | 14098 | 59 |
| XiaoGan ShenYuan ChemPharm co,ltd | 15527621225; 15527621225 | 1791901229@qq.com | China | 6744 | 52 |
| Sichuan Kulinan Technology Co., Ltd | 400-1166-196 18981987031 | cdhxsj@163.com | China | 11674 | 57 |
| ShangHai YuanYe Biotechnology Co., Ltd. | 15026964105 | shyysw007@163.com | China | 4998 | 60 |
| Chengdu Ai Keda Chemical Technology Co., Ltd. | 4008-755-333 18080918076 | 800078821@qq.com | China | 9706 | 55 |
| TOKYO CHEMICAL INDUSTRY CO., LTD. | 03-36680489 | Sales-JP@TCIchemicals.com | Japan | 28364 | 80 |
| TCI Europe | 320-37350700 | sales@tcieurope.eu | Europe | 23654 | 75 |
| TCI AMERICA | 800-4238616 | sales@tciamerica.com | Americas | 23636 | 75 |
View Lastest Price from Mefenpyr-diethyl manufacturers
| Image | Update time | Product | Price | Min. Order | Purity | Supply Ability | Manufacturer | |
|---|---|---|---|---|---|---|---|---|
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2025-06-20 | mefenpyr-diethyl
135590-91-9
|
$50.00 | 25KG | 99 | 100ton | Hebei Yanxi Chemical Co., Ltd. | |
 |
2025-02-21 | mefenpyr-diethyl
135590-91-9
|
$25.00-28.00 | 1kg | 97% | Huizhili (Changzhou) Life Technology Co., Ltd | ||
 |
2020-11-16 | Mefenpyr-diethyl
135590-91-9
|
$90.00 | 1Kg/Bag | 99% | 20 Tons | Longyan Tianhua Biological Technology Co., Ltd |
-
- mefenpyr-diethyl
135590-91-9
- $50.00
- 99
- Hebei Yanxi Chemical Co., Ltd.
-
- mefenpyr-diethyl
135590-91-9
- $25.00-28.00
- 97%
- Huizhili (Changzhou) Life Technology Co., Ltd
-
- Mefenpyr-diethyl
135590-91-9
- $90.00
- 99%
- Longyan Tianhua Biological Technology Co., Ltd
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