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Reference.org
Pyrethrin I
open-in-new
<p>Pyrethrin I is one of the two <a href="/facts/Pyrethrin/7p2KNrlc">pyrethrins</a>, natural <a href="/facts/Organic_compounds/gqCNaN45">organic compounds</a> with potent insecticidal activity. It is an <a href="/facts/Ester/FoUAIIw4">ester</a> of (+)-<i>trans</i>-<a href="/facts/Chrysanthemic_acid/6v4TVo0K">chrysanthemic acid</a> with (<i>S</i>)-(<i>Z</i>)-pyrethrolone. </p>