200926-96-1

Basic information

• Product Name: N(TAU)-METHYL-L-HISTIDINE HYDROCHLORIDE
• Synonyms: NT-METHYL-L-HISTIDINE HYDROCHLORIDE;3-(1-Methylimidazol-4-yl)-L-alanine hydrochloride, Nτ:-Methyl-L-histidine hydrochloride
• CAS NO: 200926-96-1
• Molecular Formula: C7H11N3O2
• Molecular Weight: 205.64
• Mol File: 200926-96-1.mol
• Article Data: 1

Chemical Properties

• Appearance: /
• Storage Temp.: Store at RT.
• CAS DataBase Reference: N(TAU)-METHYL-L-HISTIDINE HYDROCHLORIDE(CAS DataBase Reference)
• NIST Chemistry Reference: N(TAU)-METHYL-L-HISTIDINE HYDROCHLORIDE(200926-96-1)
• EPA Substance Registry System: N(TAU)-METHYL-L-HISTIDINE HYDROCHLORIDE(200926-96-1)

Safety Data

• WGK Germany: 3
• Hazardous Substances Data: 200926-96-1(Hazardous Substances Data)

Upstream product

• 69618-95-7 (S)-7-(methoxycarbonyl)-2-methyl-5-oxo-5,6,7,8-tetrahydroimidazo[1,5-c] pyrimidin-2-ium iodide 
• 7389-87-9 L-histidine methyl ester dihydrochloride 
• 69614-04-6 S-(+)-7-Methoxycarbonyl-5,6,7,8-tetrahydroimidazo<1,5-c>pyrimidin-5-on 

Downstream Products

• 331-38-4 L-anserine 

Relevant articles and documents

Carnosine protects cardiac myocytes against lipid peroxidation products

Endogenous histidyl dipeptides such as carnosine (β-alanine-l-histidine) form conjugates with lipid peroxidation products such as 4-hydroxy-trans-2-nonenal (HNE and acrolein), chelate metals, and protect against myocardial ischemic injury. Nevertheless, it is unclear whether these peptides protect against cardiac injury by directly reacting with lipid peroxidation products. Hence, to examine whether changes in the structure of carnosine could affect its aldehyde reactivity and metal chelating ability, we synthesized methylated analogs of carnosine, balenine (β-alanine-Nτ-methylhistidine) and dimethyl balenine (DMB), and measured their aldehyde reactivity and metal chelating properties. We found that methylation of Nτ residue of imidazole ring (balenine) or trimethylation of carnosine backbone at Nτ residue of imidazole ring and terminal amine group dimethyl balenine (DMB) abolishes the ability of these peptides to react with HNE. Incubation of balenine with acrolein resulted in the formation of single product (m/z 297), whereas DMB did not react with acrolein. In comparison with carnosine, balenine exhibited moderate acrolein quenching capacity. The Fe2+ chelating ability of balenine was higher than that of carnosine, whereas DMB lacked chelating capacity. Pretreatment of cardiac myocytes with carnosine increased the mean lifetime of myocytes superfused with HNE or acrolein compared with balenine or DMB. Collectively, these results suggest that carnosine protects cardiac myocytes against HNE and acrolein toxicity by directly reacting with these aldehydes. This reaction involves both the amino group of β-alanyl residue and the imidazole residue of l-histidine. Methylation of these sites prevents or abolishes the aldehyde reactivity of carnosine, alters its metal-chelating property, and diminishes its ability to prevent electrophilic injury.