109525-32-8 Boc-tsmgtna Boc-tyr(SO3)-met-gly-trp-nle-asp-pee t-Butyloxycarbonyl-(sulfo-tyr)-met-gly-trp-nle-asp 2-phenylethyl ester t-Butyloxycarbonyl-(sulfotyrosyl)-methionyl-glycyl-tryptophyl-norleucyl-aspartyl 2-phenylethyl ester