Cyetpyrafen
Cyetpyrafen is a pyrazole insecticide/acaricide with broad-spectrum insecticidal activity. Cyetpyrafen binds to DhelOBP4 (Ki = 4.95 μM) and DhelOBP21 (Ki = 5.51 μM) to mediate olfactory recognition in *Cryptolaemus montrouzieri*. Cyetpyrafen induces dose-dependent electroantennogram responses in *Cryptolaemus montrouzieri* and exhibits repellent effects on the species. Cyetpyrafen has bioaccumulative properties, is rapidly and passively absorbed by the roots of lettuce and rice, reaches a steady state within 24 h, preferentially accumulates in roots, and shows limited xylem/phloem translocation.
For research use only. We do not sell to patients.
- CAS No.: 1253429-01-4
- Formula: C24H31N3O2
- Molecular Weight:393.53
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Storage:
Please store the product under the recommended conditions in the Certificate of Analysis.
All Parasite Isoforms
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Biological Activity
Cyetpyrafen (1.12 mg/L; 1-96 h) is rapidly taken up by Oryza sativa (rice) and Lactuca sativa (lettuce) roots, reaching steady state within 24 h, with preferential accumulation in roots (average RCFs 1290 mL/g for rice, 1730 mL/g for lettuce) and poor translocation to shoots, and is eliminated more slowly from lettuce roots than rice roots[2].
Cyetpyrafen (5 mg/L; 3-96 h) does not undergo phloem-mediated translocation in Oryza sativa seedlings, as it cannot migrate from exposed roots to unexposed roots or shoots[2].
Cyetpyrafen (1.12 mg/L; 24-96 h) exposure induces significant increases in the activities of CYP450, POD, CarE, GT, and GST in rice and lettuce roots, indicating these enzymes mediate the metabolic transformation of cyetpyrafen in plants[2].
Cyetpyrafen is predicted to be very toxic to fish and highly toxic to daphnid and green algae, with several of its phase I metabolites (M-391, M-409-1/2, M-407) exhibiting similar ecotoxicity levels, while phase II metabolites show reduced toxicity[2].
MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.
MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.
Chemical Information
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CAS No. 1253429-01-4
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Molecular Weight 393.53
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Formula C24H31N3O2
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SMILES
C(=C(\C#N)/C1=CC=C(C(C)(C)C)C=C1)(\OC(C(C)(C)C)=O)/C=2N(CC)N=C(C)C2
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Shipping
Room temperature in continental US; may vary elsewhere.
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Storage
Please store the product under the recommended conditions in the Certificate of Analysis.
Purity & Documentation
References
[1]. Mao Z, et al. Cyetpyrafen, chlorfenapyr and spirodiclofen affect the olfactory recognition of Dastarcus helophoroides by acting on DhelOBP4 and DhelOBP21. Pestic Biochem Physiol. 2025;214:106568. [Content Brief]
[2]. Li R, et al. Insight into the uptake and metabolism of a new insecticide cyetpyrafen in plants. Environ Int. 2022;169:107522. [Content Brief]
Calculators
Concentration (start) × Volume (start) = Concentration (final) × Volume (final)