... ,3,3-hexafluoropropoxy) phenyl]-3-(2,6-difluoro = benzoyl) ureaCAS NO.: 103055-07-8Empirical formula: C17H8Cl2F8N2O3 Uses: Insect growth regulator for ... LC50 (96h) for rainbow trout>73, carp>63, bluegill sunfish>29, catfish>45mg/l.Daphnia Toxix to Daphnia. Algae Slightly toxic ... (oral)>197μg/bee. LD50 (topical) > 200μg/bee.Worms No adverse effects on earthworms.