tert-butyloxycarbonyl-arginine; N~2~-(tert-butoxycarbonyl)-N~5~-(diaminomethylidene)ornithine; N~2~-(tert-butoxycarbonyl)-N~5~-(diaminomethylidene)-L-ornithine hydrochloride; tert-butyloxycarbonyl-arginine hydrochloride; Boc-Arg-OH.HCl; Boc-Arg-OH·HCl; Boc-L-Arginine HCL