for the following products
4-(Difluorophosphonomethyl)-N-(9-fluorenylmethyloxycarbonyl)-L-phenylalanine | Fmoc-L-F2pmp-oh | N-Alfa-Fmoc-4-(phosphonodifluoromethyl)-L-phenylalanine and 4-[(Dithylphosphono)(difluoromethyl)]-N-(fluoren-9-ylmethoxycarbonyl)-L-phenylalamine
