Alpha-ketoisocaproate

α-Ketoisocaproic acid
Names

IUPAC name 4-Methyl-2-oxopentanoic acid
Systematic IUPAC name 4-Methyl-2-oxopentanoic acid
Other names 4-Methyl-2-oxovaleric acid
Identifiers
CAS Number	816-66-0^Y
3D model (Jmol)	Interactive image Interactive image
3DMet	B00066
Beilstein Reference	1701823
ChEBI	CHEBI:48430^Y
ChemSpider	69^Y
DrugBank	DB03229^Y
ECHA InfoCard	100.011.304
EC Number	212-435-5
IUPHAR/BPS	4656
KEGG	C00233^Y
MeSH	Alpha-ketoisocaproic+acid
PubChem CID	70
UN number	3265
InChI InChI=1S/C6H10O3/c1-4(2)3-5(7)6(8)9/h4H,3H2,1-2H3,(H,8,9)^Y Key: BKAJNAXTPSGJCU-UHFFFAOYSA-N^Y InChI=1/C6H10O3/c1-4(2)3-5(7)6(8)9/h4H,3H2,1-2H3,(H,8,9) Key: BKAJNAXTPSGJCU-UHFFFAOYAG
SMILES CC(C)CC(=O)C(O)=O O=C(C(=O)O)CC(C)C
Properties
Chemical formula	C₆H₁₀O₃
Molar mass	130.14 g·mol⁻¹
Density	1.055 g cm⁻³ (at 20 °C)
Melting point	8 to 10 °C (46 to 50 °F; 281 to 283 K)
Boiling point	85 °C (185 °F; 358 K) at 13 mmHg
log P	0.133
Acidity (pK_a)	2.651
Basicity (pK_b)	11.346
Hazards
EU classification (DSD) (outdated)	C
R-phrases (outdated)	R34
S-phrases (outdated)	S26, S36/37/39, S45
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Y (what is ^YN ?)
Infobox references

α-Ketoisocaproic acid is an intermediate in the metabolism of leucine.