for the following products
Fmoc-Arg(Pbf)-OH | Fmoc-Nw-2,2,4,6,7-pentamethyl-dihydrobenzofuran-5-sulfonyl-L-beta-homoarginine | N-alpha-(9-Fluorenylmethyloxycarbonyl)-N'-2,2,4,6,7-pentamethyldihydrobenzofuran-5-sulfonyl-L-arginine and Fmoc-L-Arg(Pbf)-OH