Pyrethrins

Pyrethrins is a mixture of pyrethrins, which are insecticidal compounds derived from the Chrysanthemum flower. 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 (Cay-25820) on glass, wood, or mud panels, with the effect persisting for 3-4 weeks. 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). Formulations containing pyrethrins have been used in the control of insects in agriculture and horticulture.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%. Formulation: (Request formulation change), A solution in methanol. Solubility: Chloroform: Slightly Soluble, Methanol: 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.