3948 Norflurazon Norflurazon is a pyridazinone herbicide used to control grass and broadleaf weeds. Norflurazon inhibits carotenoid synthesis, which causes chlorophyll depletion and inhibition of photosynthesis in plants. Norflurazon has low toxicity if individuals accidentally eat residues, and very low toxicity if it is inhaled or gets on skin. 27314-13-2 33775 C12H9ClF3N3O White powder. No indication of carcinogenicity to humans (not listed by IARC). This is a man-made compound that is used as a pesticide. 2013-04-25T07:56:53Z 2026-03-26T22:31:06Z C18874 50842 true CNC1=C(Cl)C(=O)N(N=C1)C1=CC(=CC=C1)C(F)(F)F C12H9ClF3N3O InChI=1S/C12H9ClF3N3O/c1-17-9-6-18-19(11(20)10(9)13)8-4-2-3-7(5-8)12(14,15)16/h2-6,17H,1H3 NVGOPFQZYCNLDU-UHFFFAOYSA-N 303.668 303.038624247 Exogenous Solid CHEMBL1881194 31131 CHEM002854 DTXSID8024234 NS00004600 44.7 69.79970000000003 25.87391440596601 3 3 1 -3.3729425810793514 0 2 2.66 -4.10 2.43e-02 g/l