Protecting Groups Used in Peptide Synthesis
Amino acid Fmoc tBoc Mass Change
Arg Mtr
Pmc
212.3
266.4
Tos
Mts
154.2
182.2
Asn Mbh
Tmob
Trt
226.3
180.2
242.3
Xan180.2
Asp tBu56.1
Bzl
OcHex
90.1
82.1
Cys Trt
tBu
Acm
S-tBu
242.3
56.1
71.1
88.2
MeBzl
Mob
Acm
104.2
120.2
71.1
Glu tBu56.1
Bzl
OcHex
90.1
82.1
Gln Mbh
Tmob
Trt
226.3
180.2
242.3
Xan180.2
His Trt
Bum
180.2
86.1
Dnp
Bom
Z
Tos
166.1
120.1
134.1
154.4
Lys ClZ
Boc
168.6
100.1
Ser tBu56.1
Bzl90.1
Thr tBu56.1
Bzl90.1
Trp
CHO
Mts
29.0
182.3
Tyr tBu56.1
Br-Z213.0