Histidine (data page)

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The complete data for Histidine

Image:Hight_setter_449px.gifChemical structure of Histidine Chemical structure of Histidine		 General information

Chemical formula: C6H9N3O2 
Molar mass: 155.16 g·mol-1
Systematic name:
2-amino-3-(3H-imidazol-4-yl)propanoic acid
Abbreviations: H, His
Synonyms:
({S/D})-α-amino-1H-imidazole-4-propanoic acid
4-(2-amino-2-carboxyethyl)imidazole
α-amino-1H-imidazole-4-propionic acid
α-amino-4-imidazolepropionic acid
Anti-rheuma
C00768
Glyoxaline-5-alanine
Database data
SMILES: C1=C(NC=N1)CC(C(=O)O)N
InChI=1/C6H9N3O2/c7-5(6(10)11)1-4-2-8-3-9-4/h2-3,5H,1,7H2,(H,8,9)(H,10,11)/t5-/m{0/1}/s1/f/h9-10H
 ATC: N/A  CAS: 351-50-8 (D), 71-00-1 (L)  DrugBank: N/A  EINECS: 206-513-8 (D) [1], 200-745-3 (L) [2]  PubChem: 71083 (D) [3], 6274 (L) [4]
Physical properties
Structure
 Crystal data
 Spectral data
UV-Vis
 IR
 NMR
 MS
Phase behavior
 Solid properties
Tm: 287 °C
 Liquid properties
Gas properties
Hazard properties
MSDS N/A Main hazards:
- N/A
 NFPA 704
 Flash point
- N/A
 R/S statement
R: N/A
S: N/A
 RTECS number:
N/A
Chemical properties
XLogP: -3.461 pI: 7.59 pKa: 1.70; 6.04; 9.09 Tautomers: 2 Hydrogen bond: donor - 3;   acceptor - 5;
Pharmacological properties
Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa)


  1. a  EINECS number 200-745-3 (D-histidine)
  2. a  EINECS number 206-513-8 (L-histidine)
  3. a  CID 71083 from PubChem (D-histidine)
  4. a  CID 6274 from PubChem (L-histidine)


v • d • e
Major families of biochemicals
Peptides | Amino acids | Nucleic acids | Carbohydrates | Nucleotide sugars | Lipids | Terpenes | Carotenoids | Tetrapyrroles | Enzyme cofactors | Steroids | Flavonoids | Alkaloids | Polyketides | Glycosides
Analogues of nucleic acids: The 20 Common Amino Acids ("dp" = data page) Analogues of nucleic acids:
Alanine (dp) | Arginine (dp) | Asparagine (dp) | Aspartic acid (dp) | Cysteine (dp) | Glutamic acid (dp) | Glutamine (dp) | Glycine (dp) | Histidine (dp) | Isoleucine (dp) | Leucine (dp) | Lysine (dp) | Methionine (dp) | Phenylalanine (dp) | Proline (dp) | Serine (dp) | Threonine (dp) | Tryptophan (dp) | Tyrosine (dp) | Valine (dp)
Retrieved from "http://en.wikipedia.org/wiki/Histidine_%28data_page%29"
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