<chemical> The active insecticidal constituent of pyrethrum flowers. Pyrethrin I is the pyretholone ester of chrysanthemummonocarboxylic acid and pyrethrin II is the pyretholone ester of chrysanthemumdicarboxylic acid monomethyl ester. ... Pharmacological action: insecticide, botanical. ... (12 Dec 1998) ...
Found on
http://www.encyclo.co.uk/local/20973
Type: Term Pronunciation: pī-rē′thrinz Definitions: 1. Insecticidal constituents of pyrethrum flowers.
Found on
http://www.medilexicon.com/medicaldictionary.php?t=74470
No exact match found.
