N5-[[[(2,3-dihydro-2,2,4,6,7-pentamethyl-5-benzofuranyl)sulfonyl]amino]iminomethyl]-N2-[(1,1-dimethylethoxy)carbonyl]-D-ornithine

boc-d-arg(pbf)-oh ; n^a-boc-n^w-(2,2,4,6,7-pentamethyl-2,3-dihydrobenzo[b]furan-5-ylsulfonyl)-d-arginine, 95% ; boc-nw-(2,2,4,6,7-pentamethyldihydrobenzofuran-5-sulfonyl)-d-arginine ; boc-n-omega-(2,2,4,6,7-pentamethyldihydrobenzofuran-5-sulfonyl)-d-arginine ; n-alpha-(t-butyloxycarbonyl)-n'-2,2,4,6,7-pentamethyldihydrobenzofuran-5-sulfonyl-d-arginine ; n-alpha-(tert-butyloxycarbonyl)-n'-2,2,4,6,7-pentamethyldihydrobenzofuran-5-sulfonyl-d-arginine ; boc-n-omega-(2,2,4,6,7-pentamethyldihydrobenzofuran-5-sufonyl)-d-arginine ; boc-d-arginine(pbf)-oh ; n-alpha-t-butoxycarbonyl-n-omega-2,2,4,6,7-pentamethyl-dihydrobenzofuran-5-sulfonyl-d-arginine ; boc-d-arg(pbf)