125674-80-8 Dimethyl (3-(4-fluorophenyl)-4,5-dihydro-5-isoxazolyl)phosphonate Dimethyl 3-(4-fluorophenyl)-2-isoxazolin-5-ylphosphonate Phosphonic acid, (3-(4-fluorophenyl)-4,5-dihydro-5-isoxazolyl)-, dimethyl ester