Skip to Content
Merck
All Photos(1)

Key Documents

53340

Sigma-Aldrich

L-Histidine dihydrochloride

≥99.0% (AT)

Synonym(s):

L-Histidine hydrochloride (1:2)

Sign Into View Organizational & Contract Pricing


About This Item

Empirical Formula (Hill Notation):
C6H9N3O2 · 2HCl
CAS Number:
Molecular Weight:
228.08
Beilstein:
6119230
EC Number:
MDL number:
UNSPSC Code:
12352209
PubChem Substance ID:
NACRES:
NA.26

product name

L-Histidine dihydrochloride, ≥99.0% (AT)

Quality Level

Assay

≥99.0% (AT)

form

powder or crystals

optical activity

[α]20/D +6.5±1°, c = 8% in H2O

ign. residue

≤0.1% (as SO4)

color

white

mp

240-245 °C (dec.)

solubility

H2O: soluble
saline: soluble

anion traces

sulfate (SO42-): ≤50 mg/kg

cation traces

As: ≤0.1 mg/kg
Cd: ≤5 mg/kg
Co: ≤5 mg/kg
Cu: ≤5 mg/kg
Fe: ≤5 mg/kg
NH4+: ≤500 mg/kg
Ni: ≤5 mg/kg
Pb: ≤5 mg/kg
Zn: ≤5 mg/kg

SMILES string

Cl.Cl.N[C@@H](Cc1c[nH]cn1)C(O)=O

InChI

1S/C6H9N3O2.2ClH/c7-5(6(10)11)1-4-2-8-3-9-4;;/h2-3,5H,1,7H2,(H,8,9)(H,10,11);2*1H/t5-;;/m0../s1

InChI key

XEJCDBUNISUVGZ-XRIGFGBMSA-N

Biochem/physiol Actions

L-Histidine is a natural proteinogenic α amino acid useful as a cell growth supplement that support protein and peptide biosynthesis. L-Histidine is studied in a wide range of applications that involve imidazole chemistry and biochemisty.
L-Histidine is a positively charged imidazole-side chain containing α amino acid. It is metabolized to histamine and is a precursor of the dipeptide carnosine. As one of the 22 proteinogenic amino acids L-His is incorporated into proteins by translation processes in vitro. L-Histidine is an essential amino acid added to cell culture media.

Storage Class Code

11 - Combustible Solids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

Already Own This Product?

Find documentation for the products that you have recently purchased in the Document Library.

Visit the Document Library

Customers Also Viewed

Ana Reis et al.
Analytical and bioanalytical chemistry, 399(8), 2779-2794 (2011-02-01)
The radical oxidation of isomeric peptides containing one reactive amino acid [histidine (H)] and another less reactive amino acid [glycine (G)] in the form of dipeptides (HG and GH) and tripeptides (HGG, GHG, and GGH) was studied by mass spectrometry
K Bjornsdottir-Butler et al.
International journal of food microbiology, 334, 108815-108815 (2020-09-24)
Histamine or scombrotoxin fish poisoning is caused by ingestion of bacterially produced histamine in fish. Histamine-producing bacteria generally contain the histidine decarboxylase gene (hdc). However, some strains of Photobacterium phosphoreum are known to produce significant levels of histamine, although the
Amir Abbas Farshid et al.
Drug and chemical toxicology, 38(4), 436-441 (2014-11-28)
In this study, the effect of separate and combined intraperitoneal (i.p.) injections of histidine and n-acetylcysteine were investigated on experimental damage induced by doxorubicin (DOX) in sciatic nerve of rats. DOX was i.p. injected at a dose of 4 mg/kg once
Reprint of: Immobilized-Metal Affinity Chromatography (IMAC): A Review.
Block H, Maertens B, Spriestersbach A, et al.
Protein Expression and Purification, DOI: 10-DOI: 10 (2011)
Alan R Hipkiss
Journal of Alzheimer's disease : JAD, 11(2), 229-240 (2007-05-25)
Reactive oxygen species, reactive nitrogen species, copper and zinc ions, glycating agents and reactive aldehydes, protein cross-linking and proteolytic dysfunction may all contribute to Alzheimer's disease (AD). Carnosine (beta-alanyl-L-histidine) is a naturally-occurring, pluripotent, homeostatic agent. The olfactory lobe is normally

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

Contact Technical Service