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Cyhalofop

Herbicide CAS# 122008-78-0

Cyhalofop

Catalog No. BCC5474----Order now to get a substantial discount!

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Chemical structure

Cyhalofop

3D structure

Chemical Properties of Cyhalofop

Cas No. 122008-78-0 SDF Download SDF
PubChem ID 86188 Appearance Powder
Formula C16H12FNO4 M.Wt 301.27
Type of Compound N/A Storage Desiccate at -20°C
Synonyms Cyhalofop acid
Solubility DMSO : ≥ 31 mg/mL (102.90 mM)
*"≥" means soluble, but saturation unknown.
Chemical Name butyl 2-[4-(4-cyano-2-fluorophenoxy)phenoxy]propanoate
SMILES CCCCOC(=O)C(C)OC1=CC=C(C=C1)OC2=C(C=C(C=C2)C#N)F
Standard InChIKey TYIYMOAHACZAMQ-UHFFFAOYSA-N
Standard InChI InChI=1S/C20H20FNO4/c1-3-4-11-24-20(23)14(2)25-16-6-8-17(9-7-16)26-19-10-5-15(13-22)12-18(19)21/h5-10,12,14H,3-4,11H2,1-2H3
General tips For obtaining a higher solubility , please warm the tube at 37 ℃ and shake it in the ultrasonic bath for a while.Stock solution can be stored below -20℃ for several months.
We recommend that you prepare and use the solution on the same day. However, if the test schedule requires, the stock solutions can be prepared in advance, and the stock solution must be sealed and stored below -20℃. In general, the stock solution can be kept for several months.
Before use, we recommend that you leave the vial at room temperature for at least an hour before opening it.
About Packaging 1. The packaging of the product may be reversed during transportation, cause the high purity compounds to adhere to the neck or cap of the vial.Take the vail out of its packaging and shake gently until the compounds fall to the bottom of the vial.
2. For liquid products, please centrifuge at 500xg to gather the liquid to the bottom of the vial.
3. Try to avoid loss or contamination during the experiment.
Shipping Condition Packaging according to customer requirements(5mg, 10mg, 20mg and more). Ship via FedEx, DHL, UPS, EMS or other couriers with RT, or blue ice upon request.

Biological Activity of Cyhalofop

DescriptionCyhalofop(Cyhalofop acid) is a recently registered herbicide from the aryloxyphenoxy propionate group in India to control a wide range of grass weed species at various growth stages in rice crop.

References:
[1]. Kumar B, et al. Evaluation of harvest residues of Cyhalofop-butyl in paddy soil. Bull Environ Contam Toxicol. 2012 Aug;89(2):344-7.

Cyhalofop Dilution Calculator

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Cyhalofop Molarity Calculator

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Preparing Stock Solutions of Cyhalofop

1 mg 5 mg 10 mg 20 mg 25 mg
1 mM 3.3193 mL 16.5964 mL 33.1928 mL 66.3856 mL 82.982 mL
5 mM 0.6639 mL 3.3193 mL 6.6386 mL 13.2771 mL 16.5964 mL
10 mM 0.3319 mL 1.6596 mL 3.3193 mL 6.6386 mL 8.2982 mL
50 mM 0.0664 mL 0.3319 mL 0.6639 mL 1.3277 mL 1.6596 mL
100 mM 0.0332 mL 0.166 mL 0.3319 mL 0.6639 mL 0.8298 mL
* Note: If you are in the process of experiment, it's necessary to make the dilution ratios of the samples. The dilution data above is only for reference. Normally, it's can get a better solubility within lower of Concentrations.

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Background on Cyhalofop

Cyhalofop(Cyhalofop acid) is a recently registered herbicide from the aryloxyphenoxy propionate group in India to control a wide range of grass weed species at various growth stages in rice crop.

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References on Cyhalofop

Acute and short-term developmental toxicity of cyhalofop-butyl to zebrafish (Danio rerio).[Pubmed:26867686]

Environ Sci Pollut Res Int. 2016 May;23(10):10080-9.

Cyhalofop-butyl is an aryloxyphenoxypropionate post-emergence herbicide widely used around the world in agriculture. The acute toxicity of Cyhalofop-butyl to embryos, larvae (12 and 72 h post-hatching), and adult zebrafish, as well as the short-term developmental toxicity of Cyhalofop-butyl to embryo and sac-fry stages, was tested. The results showed that the 96-h LC50 values of Cyhalofop-butyl to embryos, 12 h post-hatching larvae, 72 h post-hatching larvae, and adult fish were 2.03, 0.58, 1.42, and 3.49 mg/L, respectively, suggesting zebrafish early life stages were more sensitive to Cyhalofop-butyl than adult stage. Cyhalofop-butyl would inhibit the spontaneous movement, heartbeat, hatching rate of embryos, and the body length of surviving larvae of zebrafish at 1.00 mg/L or higher concentrations. Morphological abnormalities, including pericardial edema, yolk sac edema, deformation of tail, and deformation of spine, were induced by Cyhalofop-butyl. The results indicated that Cyhalofop-butyl had significant negative impacts on zebrafish at different life stages, and spontaneous movement and hatching rate were sensitive endpoints for assessing short-term developmental toxicity of Cyhalofop-butyl.

Soil adsorption studies of a rice herbicide, cyhalofop-butyl, in two texturally different soils of India.[Pubmed:24875347]

Environ Monit Assess. 2014 Oct;186(10):5969-76.

The ability of herbicides to be adsorbed by the soil and sediment and their tendency to be desorbed are some of the most important factors affecting soil and water contamination. Therefore, a sorption study was conducted to evaluate the adsorption of Cyhalofop-butyl, butyl (2R)-2-[4-(4-cyano-2-fluorophenoxy) phenoxy] propanoate, in the sandy clay loam and clayey soils using a batch equilibrium method. The adsorption of Cyhalofop-butyl was found positively related with the clay and organic carbon content. Freundlich constants (Kf) of Cyhalofop-butyl in the clayey and sandy clay loam were found to be 13.39 and 2.21, respectively. Sorption coefficients (Koc) and distribution coefficients (Kd) were found to be 265.38 and 2,092.79, and 1.38 and 11.48, for sandy clay loam and clayey soils, respectively. The adsorption isotherm suggested a relatively higher affinity of Cyhalofop-butyl to the adsorption sites at low equilibrium concentrations. The low value of the soil organic carbon partition coefficient (Koc) of Cyhalofop-butyl in the sandy loam soil suggested its weaker adsorption in soil and thus increased its risk of mobility into water sources; hence, it should be used judiciously to prevent groundwater contamination.

Determination and study on dissipation and residue determination of cyhalofop-butyl and its metabolite using HPLC-MS/MS in a rice ecosystem.[Pubmed:25007772]

Environ Monit Assess. 2014 Oct;186(10):6959-67.

Cyhalofop-butyl is an aryloxyphenoxypropionate postemergence herbicide with good control of barnyard grass in rice paddies. In this study, method for the determination of Cyhalofop-butyl and its metabolite was developed with high-performance liquid chromatography tandem mass spectrometry. Dissipation and residue levels of Cyhalofop-butyl and its metabolite in rice ecosystems were also investigated. Recoveries and relative standard deviations of Cyhalofop-butyl and Cyhalofop acid in six matrices at three spiking levels ranged from 76.1 to 107.5% and 1.1 to 8.2%, respectively. The limit of quantitation (LOQ) of Cyhalofop-butyl and Cyhalofop acid was 0.01 mg/kg in paddy water, paddy soil, rice plant, rice straw, rice hulls, and husked rice. For field experiments, the results showed that Cyhalofop-butyl degraded to Cyhalofop acid quickly, and the half-lives of Cyhalofop acid in paddy water, paddy soil, and rice plant were 1.01-1.53, 0.88-0.97, and 2.09-2.42 days, respectively. Ultimate residues of Cyhalofop-butyl and its metabolite in the rice samples were not detectable or below 0.01 mg/kg at harvest.

Cyhalofop-butyl has the potential to induce developmental toxicity, oxidative stress and apoptosis in early life stage of zebrafish (Danio rerio).[Pubmed:25863881]

Environ Pollut. 2015 Aug;203:40-9.

Cyhalofop-butyl is a selective herbicide widely employed in paddy field, which can transfer into aquatic environments. However, details of the environmental risk and aquatic toxicity of Cyhalofop-butyl have not been fully investigated. In this study, zebrafish (Danio rerio) embryos were exposed to a range of Cyhalofop-butyl until 120 hour post-fertilization (hpf) to assess embryonic toxicity of the chemical. Our results demonstrated that Cyhalofop-butyl was highly toxic to zebrafish embryos, with concentration-dependent negative effects in embryonic development. In addition, exposure to Cyhalofop-butyl resulted in significant increases in reactive oxygen species (ROS) production and cell apoptosis in heart area. The mRNA levels of the genes related to oxidative stress and apoptosis were also altered significantly after Cyhalofop-butyl exposure. Moreover, the activity of capspase-9 and caspase-3 were significantly increased. Therefore, we speculated that oxidative stress-induced apoptosis should be responsible for abnormal development during embryogenesis after Cyhalofop-butyl exposure.

Description

Cyhalofop(Cyhalofop acid) is a recently registered herbicide from the aryloxyphenoxy propionate group in India to control a wide range of grass weed species at various growth stages in rice crop.

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