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ChemicalBook--->CAS DataBase List--->1007-42-7

1007-42-7

1007-42-7 Structure

1007-42-7 Structure
IdentificationMore
[Name]

L-Histidine hydrochloride
[CAS]

1007-42-7
[Synonyms]

L-HISTIDINE DIHYDROCHLORIDE
L-Histidine hydrochloride solution
histidine hydrochloride
Crystalline2HCl
L-Histidine hydrochloride
[EINECS(EC#)]

227-890-5
[Molecular Formula]

C6H10ClN3O2
[MDL Number]

MFCD00066569
[Molecular Weight]

191.62
[MOL File]

1007-42-7.mol
Chemical PropertiesBack Directory
[Melting point ]

240-245 °C (dec.)
[alpha ]

[α]D20 +7.0~+10.0°(c=2,HCl)
[storage temp. ]

2-8°C
[CAS DataBase Reference]

1007-42-7(CAS DataBase Reference)
Safety DataBack Directory
[Safety Statements ]

S22:Do not breathe dust .
S24/25:Avoid contact with skin and eyes .
[RIDADR ]

UN 1789 8/PG 3
[WGK Germany ]

3
[F ]

3-10
Raw materials And Preparation ProductsBack Directory
[Raw materials]

HEMOGLOBIN
[Preparation Products]

N-Boc-L-Histidine
Spectrum DetailBack Directory
[Spectrum Detail]

L-Histidine hydrochloride(1007-42-7)IR1
L-Histidine hydrochloride(1007-42-7)IR2
Well-known Reagent Company Product InformationBack Directory
[Sigma Aldrich]

1007-42-7(sigmaaldrich)
Hazard InformationBack Directory
[Purification Methods]

The dihydrochloride crystallises from water or aqueous EtOH and is washed with acetone, then diethyl ether. Alternatively convert it to the histidine di-(3,4-dichlorobenzenesulfonate) salt by dissolving 3,4-dichlorobenzenesulfonic acid (1.5g/10mL) in the aqueous histidine solution with warming, and then the solution is cooled in ice. The resulting crystals (m 280o dec) can be recrystallised from 5% aqueous 3,4-dichlorobenzenesulfonic acid, then dried over CaCl2 under vacuum, and washed with diethyl ether to remove Purification of Biochemicals — Amino Acids and Peptides excess reagent. The dihydrochloride can be regenerated by passing the solution through a Dowex-1 (Cl-form) ion-exchange column. The solid is obtained by evaporation of the solution on a steam bath or better in a vacuum. [Greenstein & Winitz, The Amino Acids Vol 3 p 1976 1961, Beilstein 25/16 V 366.]
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