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641.29 [M+Na] +. 619.31 [M+H] +. 657.25 [M+K] +. 1437.39 [M+Na] +. 1453.39 [M+K] +. 1237.10 [M+Na] +. 1253.04 [M+K] +. Fig. 1 Mass spectra of compounds released from a single bead (top) starting peptide, (middle) after
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641.29 [M+Na]+ 619.31 [M+H]+ 657.25 [M+K]+ 1437.39 [M+Na]+ 1453.39 [M+K]+ 1237.10 [M+Na]+ 1253.04 [M+K]+ Fig. 1 Mass spectra of compounds released from a single bead (top) starting peptide, (middle) after coupling of the Fmoc protected building block and (bottom) after coupling of the azide protected building block.