Histidine

C₆H₉N₃O₂

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

CAS: 71-00-1

Tổng quan

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.

Thành phần

Nguyên tố Ký hiệu Nguyên tử Khối lượng nguyên tử
Hydrogen H 9 1,0080
Carbon C 6 12,0110
Nitrogen N 3 14,0070
Oxygen O 2 15,9990

Thành phần nguyên tố

H
Hydrogen ×9
5,8%
C
Carbon ×6
46,4%
N
Nitrogen ×3
27,1%
O
Oxygen ×2
20,6%

Công dụng

  • • Dietary supplement
  • • Pharmaceutical
  • • Metal chelation

Sự thật thú vị

  • ✦ 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

Tính chất

Loại
organic
Trạng thái
solid
Khối lượng mol
155,16 g/mol
Mật độ
1,4200 g/cm³
Điểm nóng chảy
282,0 °C
Độ hòa tan
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

Hợp chất liên quan

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).