Arginine

C6H14N4O2CAS 74-79-3174.20 g/mol

NHH2NNHNH2OOH
Carboxylic acidGuanidinePrimary amine

Properties

Molecular formula
C6H14N4O2
Molar mass
174.20 g/mol
Exact mass
174.1117 Da
Density
1.1 g/mL
Melting point
244 °C
pKa
2.18, 9.09, 13.2
logP
-1.34Crippen estimate
Polar surface area
125.2 Ų
H-bond donors / acceptors
5 / 3
Rotatable bonds
5
Stereocentres
Sin SMILES atom order

Hazards

Warning
Irritant (GHS07)

Aggregated from 1,818 ECHA notifications, via PubChem; a share says how many notifiers assign that statement.

Precautionary statements

P264+P265, P280, P305+P351+P338, P337+P317

Identifiers

CAS number
74-79-3
SMILES
N=C(N)NCCC[C@H](N)C(=O)O
InChIKey
ODKSFYDXXFIFQN-BYPYZUCNSA-N
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)/t4-/m0/s1

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Names and synonyms

16 names · show all
  • L-Arginine
  • Arginine, L-
  • Pentanoic acid, 2-amino-5-[(aminoiminomethyl)amino]-, (S)-
  • L-(+)-Arginine
  • (S)-2-Amino-5-[(aminoiminomethyl)amino]pentanoic acid
  • L-Norvaline, 5-[(aminoiminomethyl)amino]-
  • L-Ornithine, N5-(aminoiminomethyl)-
  • L-α-Amino-δ-guanidinovaleric acid
  • L-Arg
  • NSC 206269
  • L-Arginine C Grade
  • A 0526
  • (2S)-2-Amino-5-(diaminomethylideneamino)pentanoic acid
  • 42: PN: WO2020027640 SEQID: 105 claimed protein
  • 42: PN: KR20200014684 SEQID: 105 claimed sequence
  • 117: PN: WO2021061872 SEQID: 117 claimed protein

Work with Arginine

Stereoisomers, salts and isotopologues

The same compound in another form: other stereochemistry, a salt or hydrate, the free acid or base, or an isotope-labelled version.

Similar compounds

Tanimoto similarity of circular fingerprints over the whole catalogue. All similar compounds

Same formula

Elsewhere