Arginine

Arginine

Names
Ither names 2-Amino-5-guanidinopentanoic acid
Identifiers
CAS Nummer	7200-25-1 N 157-06-2 R N 74-79-3 S N
3D model (JSmol)	Interactive eemage Zwitterion: Interactive eemage Protonated zwitterion: Interactive eemage
3DMet	B01331
Beilstein Reference	1725411, 1725412 R, 1725413 S
ChEBI	CHEBI:29016 Y
ChEMBL	ChEMBL212301 N ChEMBL1485 N
ChemSpider	227 Y 64224 R N 6082 S N
DrugBank	DB00125 N
ECHA InfoCard	100.000.738
EC Nummer	230-571-3
Gmelin Reference	364938 R
IUPHAR/BPS	721
KEGG	C02385 N
MeSH	Arginine
PubChem CID	232 71070 R 6322 S
RTECS nummer	CF1934200 S
UNII	94ZLA3W45F Y
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
SMILES NC(CCCNC(N)=N)C(O)=O Zwitterion: [NH3+]C(CCCNC(N)=N)C([O-])=O Protonated zwitterion: [NH3+]C(CCCNC(N)=[NH2+])C([O-])=O
Properties
Chemical formula	C6H14N4O2
Molar mass	174.20 g·mol−1
Appearance	White creestals
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	slichtly soluble in ethanol insoluble in ethyl ether
log P	−1.652
Acidity (pKa)	2.18 (carboxyl), 9.09 (amino), 13.2 (guanidino)
Thermochemistry
Speceefic heat capacity, C	232.8 J K−1 mol−1 (at 23.7 °C)
Staundart molar entropy So298	250.6 J K−1 mol−1
Std enthalpy o formation ΔfHo298	−624.9–−622.3 kJ mol−1
Std enthalpy o combustion ΔcHo298	−3.7396–−3.7370 MJ mol−1
Pharmacology
ATC code	B05XB01 (WHO) S
Hazards
Safety data sheet	sigma-aldrich
GHS pictograms
GHS signal wird	WARNING
GHS hazard statements	H319
GHS precautionary statements	P305+351+338
Lethal dose or concentration (LD, LC):
LD50 (Median dose)	5110 mg/kg (rat, oral)
Relatit compoonds
Relatit alkanoic acids	N-Methyl-D-aspartic acid beta-Methylamino-L-alanine Guanidinopropionic acid Theanine Pantothenic acid
Relatit compoonds	Panthenol
Except whaur itherwise notit, data are gien for materials in thair staundart state (at 25 °C [77 °F], 100 kPa).
Y verify (whit is YN ?)
Infobox references

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