(3-(Ethoxycarbonyl)-4,5-dihydro-5-isoxazolyl)methylphosphinic acid 3-Isoxazolecarboxylic acid, 4,5-dihydro-5-(hydroxymethylphosphinyl)-, ethyl ester Phosphinic acid, (3-(ethoxycarbonyl)-4,5-dihydro-5-isoxazolyl)methyl- SZ5371666