ChemicalBook--->CAS DataBase List--->4998-57-6

4998-57-6

4998-57-6 Structure

4998-57-6 Structure
IdentificationMore
[Name]

DL-Histidine
[CAS]

4998-57-6
[Synonyms]

(+/-)-2-AMINO-3-(4-IMIDAZOLYL)PROPIONIC ACID
AKOS BBS-00004484
DL-2-AMINO-3-(4-IMIDAZOLYL)PROPIONIC ACID
DL-ALPHA-AMINO-BETA-IMIDAZOLEPROPIONIC ACID
DL-HISTIDINE
H-DL-HIS-OH
HISTIDINE
HISTIDINE, DL-
DL-Histidine, Free Base
α-Amino-4/5-imidazolepropionic acid
DL-Histidin
DL-2-Amino-3-(1H-imidazol-4-yl)propanoic acid
1H-Imidazole-4-alanine
D-Histidine/L-histidine,(1:1)
rac-(R*)-2-Amino-3-(4-imidazolyl)propionic acid
[EINECS(EC#)]

225-660-9
[Molecular Formula]

C6H9N3O2
[MDL Number]

MFCD00005208
[Molecular Weight]

155.15
[MOL File]

4998-57-6.mol
Chemical PropertiesBack Directory
[Appearance]

white to slightly yellow crystalline powder
[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. ]

Store at RT.
[solubility ]

0.5 M HCl: soluble
[form ]

powder to crystal
[pka]

1.8(at 25℃)
[color ]

White to Almost white
[Merck ]

4720
[BRN ]

7800
[Uses]

histidine is a skin-conditioning amino acid.
[CAS DataBase Reference]

4998-57-6(CAS DataBase Reference)
[EPA Substance Registry System]

4998-57-6(EPA Substance)
Safety DataBack Directory
[Hazard Codes ]

Xn
[Risk Statements ]

R22:Harmful if swallowed.
R36/37/38:Irritating to eyes, respiratory system and skin .
[Safety Statements ]

S22:Do not breathe dust .
S24/25:Avoid contact with skin and eyes .
S36/37:Wear suitable protective clothing and gloves .
S26:In case of contact with eyes, rinse immediately with plenty of water and seek medical advice .
[WGK Germany ]

3
[HS Code ]

29339900
Raw materials And Preparation ProductsBack Directory
[Raw materials]

Erythromycin Estolate-->Histamine
[Preparation Products]

ALLYLUREA
Material Safety Data Sheet(MSDS)Back Directory
[msds information]

DL-2-Amino-3-(1H-imidazol-4-yl)propanoic acid(4998-57-6).msds
Hazard InformationBack Directory
[Chemical Properties]

white to slightly yellow crystalline powder
[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.
Spectrum DetailBack Directory
[Spectrum Detail]

DL-Histidine(4998-57-6)MS
DL-Histidine(4998-57-6)IR1
DL-Histidine(4998-57-6)IR2
DL-Histidine(4998-57-6)Raman
Well-known Reagent Company Product InformationBack Directory
[Sigma Aldrich]

4998-57-6(sigmaaldrich)
[TCI AMERICA]

DL-Histidine  free base,>98.0%(T)(4998-57-6)
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