3971 Pyriproxyfen Pyriproxyfen is a pyridine-based pesticide which is found to be effective against a variety of arthropoda. It was introduced to the US in 1996, to protect cotton crops against whitefly. It has also been found useful for protecting other crops. It is also used as a prevention for fleas on household pets. 95737-68-1 91753 C20H19NO3 White powder. 46°C No indication of carcinogenicity to humans (not listed by IARC). This is a man-made compound that is used as a pesticide. 2013-04-25T07:56:54Z 2014-12-24T20:26:34Z C18605 39260 true CC(COC1=CC=C(OC2=CC=CC=C2)C=C1)OC1=NC=CC=C1 C20H19NO3 InChI=1S/C20H19NO3/c1-16(23-20-9-5-6-14-21-20)15-22-17-10-12-19(13-11-17)24-18-7-3-2-4-8-18/h2-14,16H,15H2,1H3 InChIKey=NHDHVHZZCFYRSB-UHFFFAOYSA-N 321.3698 321.136493479 Exogenous Solid CHEMBL1883234 82851