Histidine

C₆H₉N₃O₂

IUPAC: (2S)-2-Amino-3-(1H-imidazol-4-yl)propanoic acid

CAS: 71-00-1

概述

Histidine is a conditionally essential amino acid containing an imidazole side chain. It is the precursor to histamine and plays a crucial role in enzyme active sites.

组成

元素 符号 原子 原子质量
Hydrogen H 9 1.0080
Carbon C 6 12.0110
Nitrogen N 3 14.0070
Oxygen O 2 15.9990

元素组成

H
Hydrogen ×9
5.8%
C
Carbon ×6
46.4%
N
Nitrogen ×3
27.1%
O
Oxygen ×2
20.6%

用途

  • • Dietary supplement
  • • Pharmaceutical
  • • Metal chelation

趣味知识

  • ✦ The imidazole group allows histidine to switch between protonated and neutral forms at physiological pH

Structure

SMILES

C1=C(NC=N1)CC(C(=O)O)N

属性

类型
organic
状态
solid
摩尔质量
155.16 g/mol
密度
1.4200 g/cm³
熔点
282.0 °C
溶解度
43 g/L at 25°C

Molecular Descriptors

Exact Mass
155.0695
XLogP
-3.2
TPSA
92.0 Ų
H-Bond Donors
3
H-Bond Acceptors
4
Rotatable Bonds
3
Heavy Atoms
11
Complexity
151.0

相关化合物

Caffeine

C₈H₁₀N₄O₂

Coumarin

C₉H₆O₂

Acetone

(CH₃)₂CO

Acrylic Acid

C₃H₄O₂

Cysteine

C₃H₇NO₂S

DDT

C₁₄H₉Cl₅

Alanine

C₃H₇NO₂

Diazepam

C₁₆H₁₃ClN₂O

Dichloromethane

CH₂Cl₂

Butane

C₄H₁₀

Frequently Asked Questions

What is Histidine?
Histidine (C₆H₉N₃O₂) is a organic compound with the IUPAC name (2S)-2-Amino-3-(1H-imidazol-4-yl)propanoic acid.
What is the molecular weight of Histidine?
Histidine has a molar mass of 155.16 g/mol.
What state is Histidine at room temperature?
Histidine is a solid at room temperature.
Is Histidine organic or inorganic?
Histidine is classified as an organic compound.
What elements make up Histidine?
Histidine (C₆H₉N₃O₂) is composed of Hydrogen (H), Carbon (C), Nitrogen (N), Oxygen (O).