for the following products
Boc-Arg(no2)-OH | Boc-L-Arg(NO2)-OH | Boc-L-Nitroarginine | N-alpha-tert-Butyloxycarbonyl-N-gamma-nitro-L-arginine | N-Boc-N'-Nitro-L-arginine | N2-(tert-butoxycarbonyl)-nw-nitro-L-arginine and N-alpha-tert-Butoxycarbonyl-N-omega-nitro-L-arginine
