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: 2026-07-31 15:25:14
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
9-Mesityl-10-methylacridinium perchlorate Sulfapyridine Fmoc-OSu (R)-(-)-2-Amino-1-propanol Cyclobutanone 5-bromo-4-fluoro-2-nitrobenzaldehyde 4 pentyn 1 ol N-Vinylformamide Phenethyl cinnamate Pyrrolo[1,2-a]pyrimidine-6-carboxylic acid, 4,6,7,8-tetrahydro-4-oxo-, sodium salt (1:1), (6S) Ethyl 3-phenylpropanoate β-Bromostyrene Methacrylate-PEG-Methacrylate, Mn:35000 2,4-Dihydroxyacetophenone 2-Chloro 5-Fluoro Pyridine Vasicinone 2-Chloroisonicotinic Acid Tween 80 or Polysorbate 80 5-Bromo-1-Pentyne 1-(2-Methyl-5-nitrophenyl)guanidine Nitrate Methyl trans-4-Aminocyclohexanecarboxylate Hydrochloride N-(4-Cyano-3-(trifluoromethyl)phenyl)-2-methyloxirane-2-carboxamide 4-Nitrobenzotrifluoride 2-Pentyn-1-oLRelated products of tetrahydrofuran
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