Transcript No Slide Title

641.29 [M+Na]+
619.31 [M+H]+
O
C
O
H
N
O
C
O
C
O
C
O
FmocNH
CH
C
CH
O
CH
C
CH
C
C
NH-Photolabile linker-PEGA1900
N
1437.39 [M+Na]+
N
CH3
N
12
O
H
N
CH
CH3
O
H
N
657.25 [M+K]+
N
CH3
OAc
CH3
OAc
O
MeO
NHAc
O
1453.39 [M+K]+
AcO
OAc
O
C
O
C
O
C
O
C
O
N3
CH
C
CH
O
CH
C
CH
C
NH-Photolabile linker-PEGA1900
CH3
N
O
H
N
CH
C
1237.10 [M+Na]+
1253.04 [M+K]+
N
CH3
N
13
O
H
N
O
H
N
N
CH3
OAc
CH3
OAc
O
MeO
NHAc
O
AcO
OAc
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.