PYRAZOXYFEN
Synonym(s):2-[4-(2,4-Dichlorobenzoyl)-1,3-dimethylpyrazol-5-yloxy]acetophenone
- CAS NO.：71561-11-0
- Empirical Formula: C20H16Cl2N2O3
- Molecular Weight: 403.26
- MDL number: MFCD00274563
- SAFETY DATA SHEET (SDS)
- Update Date: 2026-05-28 02:04:46
What is PYRAZOXYFEN?
Definition
ChEBI: Pyrazoxyfen is a member of the class of pyrazoles that is 1,3-dimethylpyrazole which is substituted at positions 4 and 5 by 2,4-dichlorobenzoyl and 2-oxo-2-phenylethoxy groups, respectively. A pro-herbicide (for the corresponding 5-hydroxypyrazole), it is used as a pre- or post-emergence herbicide for the control of annual and perennial weeds in rice. It has a role as a proherbicide, an agrochemical and a carotenoid biosynthesis inhibitor. It is a member of acetophenones, a member of pyrazoles and a dichlorobenzene.
Properties of PYRAZOXYFEN
| Melting point: | 111.5 °C |
| Boiling point: | 599.9±50.0 °C(Predicted) |
| Density | 1.4162 (rough estimate) |
| refractive index | 1.6200 (estimate) |
| storage temp. | 0-6°C |
| form | neat |
| pka | -0.32±0.10(Predicted) |
| EPA Substance Registry System | Pyrazoxyfen (71561-11-0) |
Safety information for PYRAZOXYFEN
| Signal word | Warning |
| Pictogram(s) |
 Exclamation Mark Irritant GHS07  Environment GHS09 |
| GHS Hazard Statements |
H302:Acute toxicity,oral H410:Hazardous to the aquatic environment, long-term hazard |
| Precautionary Statement Codes |
P273:Avoid release to the environment. |
Computed Descriptors for PYRAZOXYFEN
New Products
1-(4-methoxyphenyl)-4-(4-Nitrophenyl)Piperazine (IT-1) 1,2,3,9-Tetrahydro-9-Methyl-4H-Carbazole-4-One Dibenzo[b,f][1,4]thiazepin-11(10H)-one Cis-Tosylate Dibenzoyl-L-tartaric acid Anhydrous (Resolution Reagent) 1-Benzhydrylazetane-3-carbonitrile 8-oxa-1,3-diazaspiro[4.5]decane-2,4-dione (±)-amino(2-fluorophenyl)acetic acid 2-(2-Chlorophenyl)glycine AMINO-(3-CHLORO-PHENYL)-ACETIC ACID 2'-Fluoroacetophenone METHANOL-D1(OD) N-ETHYL-D5-AMINE HYDROCHLORIDE BENZOIC ACID-D CHLOROFORM-D BENZENE-D6 TOLUENE-D3 2-Hydroxybutanenitrile 1-Benzylindolin-2-one Ethyl 2-bromo-3-oxobutanoate 4-(3-chloropropyl)morpholine 1-Benzylindoline-2,3-dione 3-Oxocyclobutanecarboxylic acid 1-(3-Chlorophenyl)piperazine hydrochlorideRelated products of tetrahydrofuran
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