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Chemical structure of Fmoc-Asp(2-phenylisopropyl ester)-OH

GA21534

Fmoc-Asp(2-phenylisopropyl ester)-OH

Also known as (2S)-2-(9H-fluoren-9-ylmethoxycarbonylamino)-4-oxo-4-(2-phenylpropan-2-yloxy)butanoic acid

An aspartic acid derivative allowing specific side chain deprotection with 1% TFA in dichloromethane· Ocampo et al· applied OPp protection during the synthesis of a peptide-oligonucleotide conjugate and cleaved it with 3% trichloroacetic acid in DCM·The OPp derivative is far less prone towards base-catalyzed aspartimide formation than the OAll, OBzl, or ODmab esters, its stability comes close to the stability of the OtBu ester

ChemicalCAS200336-86-3MW473.53FormulaC28H27NO6
CAS number
200336-86-3
Molecular weight
473.53
Formula
C28H27NO6
Solubility
Soluble in DMSO
InChIKey
MEAHCBOPNIDLFH-DEOSSOPVSA-N
Catalogue number
GA21534
Brand
GLPBIO
Computed properties PubChem CID 56777012 · XLogP 4.6 · TPSA 102 Ų · H-bond donors 2
XLogP
4.6
TPSA
102 Ų
H-bond donors
2
H-bond acceptors
6
Rotatable bonds
10
Heavy atoms
35

SMILES CC(C)(C1=CC=CC=C1)OC(=O)C[C@@H](C(=O)O)NC(=O)OCC2C3=CC=CC=C3C4=CC=CC=C24

Computed descriptors from PubChem (CID 56777012), public domain. Identity cross-checked against the supplier's molecular formula and weight — verify before use.

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