A mixture of insecticidal pyrethrins
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Pyrethrins (technical grade)

Item No. 25814

Product Insert (PDF)Safety Data Sheet (SDS) (PDF)
Technical Information
Formal Name
Pyrethrin I: (S)-2-methyl-4-oxo-3-((E)-penta-2,4-dien-1-yl)cyclopent-2-en-1-yl (1R)-2,2-dimethyl-3-(2-methylprop-1-en-1-yl)cyclopropane-1-carboxylate
Pyrethrin II: 2-methyl-4-oxo-3-((E)-penta-2,4-dien-1-yl)cyclopent-2-en-1-yl (1R)-3-((E)-3-methoxy-2-methyl-3-oxoprop-1-en-1-yl)-2,2-dimethylcyclopropane-1-carboxylate
CAS Number
8003-34-7
Purity
≥85% (mixure of isomers)
Formulation
A 10 mg/ml solution in methanol
Solubility(Learn about Variance in Solubility)
Chloroform: Slightly SolubleMethanol: Slightly Soluble
SMILES
C/C(C(OC)=O)=C\C1C(C)(C)[C@@H]1C(OC2C(C)=C(C/C=C/C=C)C(C2)=O)=O.C/C(C)=C\C3C(C)(C)[C@@H]3C(O[C@@H]4C(C)=C(C/C=C/C=C)C(C4)=O)=O
InChi Code
InChI=1S/C22H28O5.C21H28O3/c1-7-8-9-10-15-14(3)18(12-17(15)23)27-21(25)19-16(22(19,4)5)11-13(2)20(24)26-6;1-7-8-9-10-15-14(4)18(12-17(15)22)24-20(23)19-16(11-13(2)3)21(19,5)6/h7-9,11,16,18-19H,1,10,12H2,2-6H3;7-9,11,16,18-19H,1,10,12H2,2-6H3/b9-8+,13-11+;9-8+/t16?,18?,19-;16?,18-,19-/m00/s1
InChi Key
VXSIXFKKSNGRRO-YWUDCVDHSA-N
Shipping & Storage Information
Storage
-20°C
Shipping
Room temperature in continental US; may vary elsewhere
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    Product Description

    Pyrethrins is a mixture of pyrethrins, which are insecticidal compounds derived from the Chrysanthemum flower.1 Pyrethrins induce mortality of C. fatigans mosquitoes when used at a concentration of 200 mg/ft2 alone or in combination with the synergist piperonyl butoxide (Item No. 25820) on glass, wood, or mud panels, with the effect persisting for 3-4 weeks.2 Pyrethrins are toxic to rats via oral administration (LC50s = 700 and 1,030 mg/kg for female and male rats) and inhalation (LD50 = 3.4 mg/L), as well as to rainbow trout (LC50 = 52.2 µg/L).3,4 Formulations containing pyrethrins have been used in the control of insects in agriculture and horticulture.

    WARNING This product is not for human or veterinary use.

    References & Product Citations
    Product Description References

    1. LaForge, F.B., and Barthel, W.F. Constituents of pyrethrum flowers. XX. The partial synthesis of pyrethrins and cinerins and their relative toxicities. The Journal of Organic Chemistry 12(1), 199–202 (1947).

    2. Pal, R., Sharma, M.I., and Krishnamurthy, B.S. Toxicity of synthetic and natural pyrethrins incorporating synergists against mosquitoes. Indian J. Malariol. 6(3), 331-341 (1953).

    3. Authority, E.F.S. Conclusion on the peer review of the pesticide risk assessment of the active substance pyrethrins. EFSA J. 11(1), 3032 (2013).

    4. Marking, L.L., and Mauck, W.L. Toxicity of paired mixtures of candidate forest insecticides to rainbow trout. Bull. Environ. Contam. Toxicol. 13(5), 518-523 (1975).