Arginine

Arginine

Names
Ither names 2-Amino-5-guanidinopentanoic acid[citation needit]
Identifiers
CAS Registry Number	7200-25-1 N 157-06-2 R Y 74-79-3 S Y
3DMet	B01331
ATC code
Beilstein Reference	1725411, 1725412 R, 1725413 S
ChEBI	CHEBI:29016 Y
ChEMBL	ChEMBL212301 N ChEMBL1485 N
ChemSpider	227 Y 64224 R Y 6082 S Y
DrugBank	DB00125 N
EC-nummer	[1]
Gmelin Reference	364938 R
InChI InChI=1S/C6H14N4O2/c7-4(5(11)12)2-1-3-10-6(8)9/h4H,1-3,7H2,(H,11,12)(H4,8,9,10) Y Key: ODKSFYDXXFIFQN-UHFFFAOYSA-N Y
IUPHAR ligand
Jmol-3D images	Image Image
KEGG	C02385 N
MeSH	Arginine
PubChem
RTECS nummer	CF1934200 S
SMILES NC(CCC[nH]:c(:[nH]):[nH2])c(:[o]):[oH] NC(CCCNC(N)=N)C(O)=O
UNII	94ZLA3W45F Y
Properties
Chemical formula	C6H14N4O2
Molar mass	174.20 g·mol−1
Appearance	White crystals
Odour	Odourless
Meltin pynt	260 °C; 500 °F; 533 K
Bylin pynt	368 °C (694 °F; 641 K)
Solubility in watter	14.87 g/100 mL (20 °C)
Solubility	slightly soluble in ethanol insoluble in ethyl ether
log P	−1.652
Acidity (pKa)	2.488
Basicity (pKb)	11.509
Thermochemistry
Std enthalpy o formation ΔfHo298	−624.9–−622.3 kJ mol−1
Std enthalpy o combustion ΔcHo298	−3.7396–−3.7370 MJ mol−1
Staundart molar entropy So298	250.6 J K−1 mol−1
Speceefic heat capacity, C	232.8 J K−1 mol−1 (at 23.7 °C)
Hazards
Safety data sheet	Sigma-Aldrich
GHS pictograms
GHS signal wird	WAIRNIN
GHS hazard statements	H319
GHS precautionary statements	P305+351+338
EU clessification	Xi
R-phrases	R36
S-phrases	S26
Lethal dose or concentration (LD, LC):
LD50 (Median dose)	5110 mg/kg (rat, oral)
Related compounds
Relatit alkanoic acids	N-Methyl-D-aspartic acid beta-Methylamino-L-alanine Guanidinopropionic acid Theanine Pantothenic acid
Relatit compoonds	Panthenol
Except whaur otherwise notit, data are gien for materials in thair staundart state (at 25 °C [77 °F], 100 kPa).
N verify (whit is YN ?)
Infobox references

Arginine (/ˈɑːrɡɪniːn/, abbreviatit as Arg or R) is an α-amino acid. It wis first isolatit in 1886.