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ChemicalBook--->CAS DataBase List--->2002-22-4

2002-22-4

2002-22-4 Structure

2002-22-4 Structure
IdentificationBack Directory
[Name]

2-MERCAPTO-L-HISTIDINE
[CAS]

2002-22-4
[Synonyms]

L-THIOHISTIDINE
2-THIOLHISTIDINE
EINECS 217-899-2
H-2-MERCAPTO-HIS-OH
L-Mercaptohistidine
2-MERCAPTO-L-HISTIDI
H-HIS(2-MERCAPTO)-OH
2-MERCAPTO-HISTIDINE
L-His(2-mercapto)-OH
2-MERCAPTO-L-HISTIDINE
1H-IMIDAZOLE-4-PROPANOIC ACID
2-Mercapto-L-histidine≥ 98% (TLC)
2-Thiolhistidine, 1H-Imidazole-4-propanoic Acid
(S)-α-Amino-2,3-dihydro-2-thioxo-1H-imidazole-4-propionic acid
(2S)-2-ammonio-3-(2-thioxo-1,3-dihydroimidazol-4-yl)propanoate
(2S)-2-ammonio-3-(2-thioxo-1,3-dihydroimidazol-4-yl)propionate
(2S)-2-amino-3-(2-thioxo-1,3-dihydroimidazol-4-yl)propanoic acid
(2S)-2-amino-3-(2-thioxo-1,3-dihydroimidazol-4-yl)propionic acid
(2S)-2-azaniumyl-3-(2-thioxo-1,3-dihydroimidazol-4-yl)propanoate
(S)-alpha-amino-2,3-dihydro-2-thioxo-1H-imidazole-4-propionic acid
(2S)-2-azaniumyl-3-(2-sulfanylidene-1,3-dihydroimidazol-4-yl)propanoate
(2S)-2-amino-3-(2-sulfanylidene-1,3-dihydroimidazol-4-yl)propanoic acid
[EINECS(EC#)]

217-899-2
[Molecular Formula]

C6H9N3O2S
[MDL Number]

MFCD00047018
[MOL File]

2002-22-4.mol
[Molecular Weight]

187.22
Chemical PropertiesBack Directory
[Appearance]

Colourless Crystals
[Melting point ]

320-325°C
[Boiling point ]

376.3±52.0 °C(Predicted)
[density ]

1.52±0.1 g/cm3(Predicted)
[storage temp. ]

-15°C
[solubility ]

Aqueous Acid (Slightly)
[form ]

Solid
[pka]

pK1:1.84(+1);pK2:8.47(0);pK3:11.4(SH) (25°C)
[color ]

Off-White
Hazard InformationBack Directory
[Chemical Properties]

Colourless Crystals
[Uses]

An intermediate in the formation of L-egothioneine, a natural amino acid ubiquitously present in cells and tissues of most plants and mammalian species. In humans, L-ergothioneine is found in red blo od cells, liver, kidney, brain, seminal fluid, and cataract-free lenses at concentrations ranging from 100 uM to 2 mM. L-ergothioneine is exclusively biosynthesized in fungi and mycobacteria. Hence, humans assimilate it through dietary intake.
Safety DataBack Directory
[Symbol(GHS) ]


GHS07
[Signal word ]

Warning
[Hazard statements ]

H317-H319
[Precautionary statements ]

P280-P305+P351+P338
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