| | Identification | Back Directory |  | [Name] 
 N'alpha-histidylhistidine
 |  | [CAS] 
 306-14-9
 |  | [Synonyms] 
 His-His
 His-His-OH
 H-His-His-OH
 L-His-L-His-OH
 L-Histidine, L-histidyl-
 N'alpha-histidylhistidine
 2-[[2-amino-3-(1H-imidazol-5-yl)propanoyl]amino]-3-(1H-imidazol-5-yl)propanoic acid
 2-[[2-amino-3-(1H-imidazol-5-yl)propanoyl]amino]-3-(1H-imidazol-5-yl)propionic acid
 2-[[2-azanyl-3-(1H-imidazol-5-yl)propanoyl]amino]-3-(1H-imidazol-5-yl)propanoic acid
 (S)-2-[(S)-2-Amino-3-(1H-imidazol-4-yl)propionylamino]-3-(1H-imidazol-4-yl]propionic acid
 |  | [EINECS(EC#)] 
 206-179-3
 |  | [Molecular Formula] 
 C12H16N6O3
 |  | [MOL File] 
 306-14-9.mol
 |  | [Molecular Weight] 
 292.29
 | 
 | Chemical Properties | Back Directory |  | [Melting point ] 
 248 °C
 |  | [Boiling point ] 
 853.3±65.0 °C(Predicted)
 |  | [density ] 
 1.483±0.06 g/cm3(Predicted)
 |  | [pka] 
 2.72±0.10(Predicted)
 |  | [Sequence] 
 His-His
 | 
 | Hazard Information | Back Directory |  | [Uses] 
 H-His-His-OH is a useful research chemical compound used in the mechanisms of binding of oligoHis-tags to Ni2+-NTA surfaces.
 |  | [Definition] 
 ChEBI: A dipeptide formed from two L-histidine residues.
 | 
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