CAS 71-00-1

L-Histidine

Description:

L-Histidine is an essential amino acid that plays a crucial role in various biological processes. It is classified as a polar, positively charged amino acid due to the presence of an imidazole side chain, which can participate in hydrogen bonding and metal ion coordination. L-Histidine is involved in the synthesis of proteins and is a precursor for histamine, a vital neurotransmitter. It has a pKa value around 6.0, indicating that it can act as both an acid and a base, making it important in buffering systems within biological fluids. This amino acid is also known for its role in enzyme catalysis and is found in hemoglobin, contributing to oxygen transport in the blood. L-Histidine is soluble in water and has a relatively high melting point. It is commonly found in dietary sources such as meat, fish, dairy products, and certain grains, making it essential for human health, particularly in growth and tissue repair.

Formula: C₆H₉N₃O₂

InChI: InChI=1S/C6H9N3O2/c7-5(6(10)11)1-4-2-8-3-9-4/h2-3,5H,1,7H2,(H,8,9)(H,10,11)/t5-/m0/s1

InChI key: InChIKey=HNDVDQJCIGZPNO-YFKPBYRVSA-N

SMILES: C([C@@H](C(O)=O)N)C1=CN=CN1

Synonyms:

• (2S)-2-Amino-3-(1H-imidazol-4-yl)propanoic acid
• (2S)-2-Azaniumyl-3-(1H-imidazol-5-yl)propanoate
• (S)-2-Amino-3-(1H-imidazol-4-yl)propanoic acid
• (S)-4-(2-Amino-2-carboxyethyl)imidazole
• (S)-Histidine
• (S)-α-Amino-1H-imidazole-4-propanoic acid
• 103: PN: WO2021061872 SEQID: 103 claimed protein
• 124: PN: WO2020191245 SEQID: 252 claimed protein
• 1H-Imidazole-4-alanine, (S)-
• 1H-Imidazole-4-propanoic acid, α-amino-, (S)-
• <span class="text-smallcaps">L</span>-(-)-Histidine
• <span class="text-smallcaps">L</span>-Alanine, 3-(1H-imidazol-4-yl)-
• Glyoxaline-5-alanine
• Histidin
• Histidina
• Histidine
• Histidine, <span class="text-smallcaps">L</span>-
• Histidine, L-
• L-Alanine, 3-(1H-imidazol-4-yl)-
• L-Hystidine
• Nsc 137773
• (S)-2-Amino-3-(4-imidazolyl)propionic acid~H-His-OH
• L-Histidine Base
• L-HIS = H-His-OH
• L-Histidine
• H-His-OH
• L-Histidine,free base
• His

L-Histidine (base) extrapure CHR, 99%

CAS: 71-00-1

Formula: C₆H₉N₃O₂

Purity: min. 99 %

Color and Shape: White, Crystalline powder, Clear, Colourless

Molecular weight: 155.16

Ref: SR-94495

L-Histidine ExiPlus, Multi-Compendial, 99%

CAS: 71-00-1

Formula: C₆H₉N₃O₂

Purity: min. 99 %

Color and Shape: White, Crystalline powder, Clear, Colourless

Molecular weight: 155.16

Ref: SR-42437