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Amino Acids & Building Blocks
Peptide Coupling Reagents
HOAt
HOAt
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Background
A coupling activator for racemization-free coupling in peptide synthesis; An additive for peptide segment coupling in in reducing the extent of configurational loss at the reactive carboxylic acid residue. Carpino L A etc. works demonstrated that the DIC/HOAt system is more effective in preserving configuration for peptide segment coupling than the analogous DIC/HOBt system
in DMF and DCM. [1]
Reference: Carpino L A, El-Faham A. The diisopropylcarbodiimide/1-hydroxy-7-azabenzotriazole system: segment coupling and stepwise peptide assembly[J]. Tetrahedron, 1999, 55(22): 6813-6830.
Chemical Properties
Physical Appearance
A solid
Storage
Desiccate at -20°C
M.Wt
136.11
Cas No.
39968-33-7
Formula
C5H4N4O
Solubility
≥3.62 mg/mL in H2O with ultrasonic; ≥6.81 mg/mL in DMSO; ≥9.29 mg/mL in EtOH with ultrasonic