leucine

leucine
	Skeletal formula of L-leucine
Ball-and-stick model	Space-filling model
Names
	IUPAC name Leucine
	Systematic IUPAC name 2-Amino-4-methylpentanoic acid
Identifiers
CAS Number	61-90-5 ;
3D model (JSmol)	Interactive image; Zwitterion: Interactive image;
ChEBI	CHEBI:15603 ;
ChEMBL	ChEMBL291962 ;
ChemSpider	5880 ;
DrugBank	DB00149 ;
IUPHAR/BPS	3312;
KEGG	D00030 ;
PubChem CID	6106;
UNII	GMW67QNF9C ;
	InChI InChI=1S/C6H13NO2/c1-4(2)3-5(7)6(8)9/h4-5H,3,7H2,1-2H3,(H,8,9)/t5-/m0/s1 Key: ROHFNLRQFUQHCH-YFKPBYRVSA-N ; InChI=1/C6H13NO2/c1-4(2)3-5(7)6(8)9/h4-5H,3,7H2,1-2H3,(H,8,9)/t5-/m0/s1 Key: ROHFNLRQFUQHCH-YFKPBYRVBU;
	SMILES CC(C)C[C@@H](C(=O)O)N; Zwitterion: CC(C)C[C@@H](C(=O)[O-])[NH3+];
Properties
Chemical formula	C6H13NO2
Molar mass	131.175 g·mol−1
Acidity (pKa)	2.36 (carboxyl), 9.60 (amino)
Magnetic susceptibility (χ)	−84.9·10−6 cm3/mol
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references