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CAS 121-21-1

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Pyrethrin I

Description:
Pyrethrin I, with the CAS number 121-21-1, is a natural insecticide derived from the flowers of the Chrysanthemum cinerariifolium, commonly known as the pyrethrum daisy. It is one of the primary components of pyrethrins, which are known for their effectiveness against a wide range of insect pests. Pyrethrin I is characterized by its ability to disrupt the normal functioning of the nervous system in insects, leading to paralysis and death. It is a colorless to pale yellow liquid with a characteristic floral odor. The substance is relatively unstable in the presence of light and air, which can lead to degradation, thus affecting its efficacy. Pyrethrin I is often used in agricultural and household pest control products due to its rapid action and low toxicity to mammals when used appropriately. However, it can be harmful to aquatic organisms, necessitating careful handling and application to minimize environmental impact. Its use is regulated in many countries to ensure safety for both humans and non-target species.
Formula:C21H28O3
InChI:InChI=1S/C21H28O3/c1-7-8-9-10-15-14(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/b9-8-/t16-,18+,19+/m1/s1
InChI key:InChIKey=ROVGZAWFACYCSP-VUMXUWRFSA-N
SMILES:C(O[C@@H]1C(C)=C(C/C=C\C=C)C(=O)C1)(=O)[C@@H]2[C@@H](C=C(C)C)C2(C)C
Synonyms:
  • (+)-Pyrethronyl (+)-trans-chrysanthemate
  • 2,2-Dimethyl-3-(2-methylpropenyl)cyclopropanecarboxylic acid, ester with 4-hydroxy-3-methyl-2-(2,4-pentadienyl)-2-cyclopenten-1-one
  • 2-Methyl-4-oxo-3-(penta-2,4-dienyl)cyclopent-2-enyl-[1R-[1α[S*(Z)],3β]]-chrysanthemat
  • 2-methyl-4-oxo-3-(penta-2,4-dienyl)cyclopent-2-enyl [1R-[1α[S*(Z)],3β]]-chrysanthemate
  • Chrysanthemsaeure-(2-Methyl-4-Oxo-3-(2,4-Pentadienyl)-2-Cyclopentenyl)-Ester
  • Chrysanthemummonocarboxylic acid pyrethrolone ester
  • Cyclopropane carboxylic acid, 2,2-dimethyl-3-(2-methyl-1-propenyl)-, 2-methyl-4-oxo-3-(2,4-pentadienyl)-2-cyclopenten-1-yl ester, [1R[1α[S*(Z)],3β]]
  • Cyclopropanecarboxylic acid, 2,2-dimethyl-3-(2-methyl-1-propen-1-yl)-, (1S)-2-methyl-4-oxo-3-(2Z)-2,4-pentadien-1-yl-2-cyclopenten-1-yl ester, (1R,3R)-
  • Cyclopropanecarboxylic acid, 2,2-dimethyl-3-(2-methyl-1-propenyl)-, 2-methyl-4-oxo-3-(2,4-pentadienyl)-2-cyclopenten-1-yl ester, [1R-[1α[S*(Z)],3β]]-
  • Cyclopropanecarboxylic acid, 2,2-dimethyl-3-(2-methylpropenyl)-, ester with 4-hydroxy-3-methyl-2-(2,4-pentadienyl)-2-cyclopenten-1-one
  • See more synonyms
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