DL-Histidine
DL-Histidine Basic information
- Product Name:
- DL-Histidine
- Synonyms:
-
- 1H-Imidazole-4-alanine
- D-Histidine/L-histidine,(1:1)
- rac-(R*)-2-Amino-3-(4-imidazolyl)propionic acid
- DL-Histidine,98%
- DL-Histdine
- H-DL-His-OH (DL-Histidine
- DL-Histidine 0
- DL-Histidine
- CAS:
- 4998-57-6
- MF:
- C6H9N3O2
- MW:
- 155.15
- EINECS:
- 225-660-9
- Product Categories:
-
- alpha-Amino Acids
- Amino Acids
- Biochemistry
- Amino Acids
- Mol File:
- 4998-57-6.mol
DL-Histidine Chemical Properties
- Melting point:
- 273 °C (dec.)(lit.)
- Boiling point:
- 278.95°C (rough estimate)
- Density
- 1.3092 (rough estimate)
- refractive index
- 1.6500 (estimate)
- storage temp.
- Keep in dark place,Inert atmosphere,Room temperature
- solubility
- 0.5 M HCl: soluble
- form
- powder to crystal
- pka
- 1.8(at 25℃)
- color
- White to Almost white
- Merck
- 14,4720
- BRN
- 7800
- CAS DataBase Reference
- 4998-57-6(CAS DataBase Reference)
- EPA Substance Registry System
- Histidine (4998-57-6)
Safety Information
- Hazard Codes
- Xn
- Risk Statements
- 22-36/37/38
- Safety Statements
- 22-24/25-36/37-26
- WGK Germany
- 3
- HS Code
- 29339900
MSDS
- Language:English Provider:DL-2-Amino-3-(1H-imidazol-4-yl)propanoic acid
- Language:English Provider:ACROS
- Language:English Provider:SigmaAldrich
DL-Histidine Usage And Synthesis
Chemical Properties
white to slightly yellow crystalline powder
Uses
DL-Histidine has been used to study the fouling behaviour of polyethersulfone ultrafiltration membranes made with different PVP (polyvinylpyrrolidone).
Uses
histidine is a skin-conditioning amino acid.
Definition
ChEBI: An alpha-amino acid that is propanoic acid bearing an amino substituent at position 2 and a 1H-imidazol-4-yl group at position 3.
Synthesis Reference(s)
Journal of the American Chemical Society, 67, p. 502, 1945 DOI: 10.1021/ja01219a513
Chemical and Pharmaceutical Bulletin, 35, p. 3447, 1987
Biochem/physiol Actions
L-Histidine is involved in the one-carbon unit metabolism. It is associated with protein methylation. L-Histidine is a part of hemoglobin structure and function. L-Histidine is a component of dipeptides with antioxidative property. Histidine serves as a precursor for the formation of histamine, which is associated with allergic responses. Urocanic acid, an immune response modulator in skin is also biosynthesised from histidine.
DL-Histidine Preparation Products And Raw materials
Raw materials
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