for the following products
N-(9-Fluorenylmethyloxycarbonyl)-N'-trityl-D-asparagine | N-alpha-(9-Fluorenylmethyloxycarbonyl)-n-beta-trityl-D-asparagine | N-alpha-Fmoc-N-gamma-Trityl-D-asparagine | N2-[(9H-fluoren-9-ylmethoxy)carbonyl]-N-(triphenylmethyl)-D-asparagine and Fmoc-D-Asn(Trt)-OH
