Relevant Data

Food Additives Approved in the United States:

Food Additives Approved by WHO:


General Information

Chemical name4-Methyl-2-oxovaleric acid
CAS number816-66-0
COE number2263
JECFA number633
Flavouring typesubstances
FL No.08.052
MixtureNo
Purity of the named substance at least 95% unless otherwise specified
Reference bodyJECFA

From webgate.ec.europa.eu

Computed Descriptors

Download SDF
2D Structure
CID70
IUPAC Name4-methyl-2-oxopentanoic acid
InChIInChI=1S/C6H10O3/c1-4(2)3-5(7)6(8)9/h4H,3H2,1-2H3,(H,8,9)
InChI KeyBKAJNAXTPSGJCU-UHFFFAOYSA-N
Canonical SMILESCC(C)CC(=O)C(=O)O
Molecular FormulaC6H10O3
Wikipediaα-Ketoisocaproic acid

From Pubchem


Computed Properties

Property Name Property Value
Molecular Weight130.143
Hydrogen Bond Donor Count1
Hydrogen Bond Acceptor Count3
Rotatable Bond Count3
Complexity126.0
CACTVS Substructure Key Fingerprint A A A D c c B g M A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A G g A A C A A A D Q S A g A A C C A A A A g A I A I C Q C A I A A A A A A A A A A A F A A A A A A B I A A A A A Q A A E A A A A A A C I A A A M A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A = =
Topological Polar Surface Area54.4
Monoisotopic Mass130.063
Exact Mass130.063
XLogP3None
XLogP3-AA0.9
Compound Is CanonicalizedTrue
Formal Charge0
Heavy Atom Count9
Defined Atom Stereocenter Count0
Undefined Atom Stereocenter Count0
Defined Bond Stereocenter Count0
Undefined Bond Stereocenter Count0
Isotope Atom Count0
Covalently-Bonded Unit Count1

From Pubchem


Food Additives Biosynthesis/Degradation


ADMET Predicted Profile --- Classification

Model Result Probability
Absorption
Blood-Brain BarrierBBB+0.9523
Human Intestinal AbsorptionHIA+0.9810
Caco-2 PermeabilityCaco2-0.5504
P-glycoprotein SubstrateNon-substrate0.7659
P-glycoprotein InhibitorNon-inhibitor0.8665
Non-inhibitor0.9230
Renal Organic Cation TransporterNon-inhibitor0.9552
Distribution
Subcellular localizationMitochondria0.8876
Metabolism
CYP450 2C9 SubstrateNon-substrate0.8451
CYP450 2D6 SubstrateNon-substrate0.9087
CYP450 3A4 SubstrateNon-substrate0.6812
CYP450 1A2 InhibitorNon-inhibitor0.9506
CYP450 2C9 InhibitorNon-inhibitor0.9094
CYP450 2D6 InhibitorNon-inhibitor0.9578
CYP450 2C19 InhibitorNon-inhibitor0.9616
CYP450 3A4 InhibitorNon-inhibitor0.9712
CYP Inhibitory PromiscuityLow CYP Inhibitory Promiscuity0.9892
Excretion
Toxicity
Human Ether-a-go-go-Related Gene InhibitionWeak inhibitor0.9909
Non-inhibitor0.9673
AMES ToxicityNon AMES toxic0.9491
CarcinogensNon-carcinogens0.5126
Fish ToxicityHigh FHMT0.6318
Tetrahymena Pyriformis ToxicityHigh TPT0.5684
Honey Bee ToxicityHigh HBT0.6957
BiodegradationReady biodegradable0.9073
Acute Oral ToxicityIII0.5858
Carcinogenicity (Three-class)Non-required0.7223

From admetSAR


ADMET Predicted Profile --- Regression

Model Value Unit
Absorption
Aqueous solubility-0.7587LogS
Caco-2 Permeability0.6457LogPapp, cm/s
Distribution
Metabolism
Excretion
Toxicity
Rat Acute Toxicity1.5348LD50, mol/kg
Fish Toxicity2.8188pLC50, mg/L
Tetrahymena Pyriformis Toxicity-0.3109pIGC50, ug/L

From admetSAR


Toxicity Profile

Route of ExposureNone
Mechanism of ToxicityKetoleucine is a metabolite that accumulates in Maple Syrup Urine Disease (MSUD) and shown to compromise brain energy metabolism by blocking the respiratory chain.
MetabolismNone
Toxicity ValuesNone
Lethal DoseNone
Carcinogenicity (IARC Classification)No indication of carcinogenicity to humans (not listed by IARC).
Minimum Risk LevelNone
Health EffectsChronically high levels of keto-leucine are associated with Maple Syrup Urine Disease.
TreatmentNone
Reference
  1. Sgaravatti AM, Rosa RB, Schuck PF, Ribeiro CA, Wannmacher CM, Wyse AT, Dutra-Filho CS, Wajner M: Inhibition of brain energy metabolism by the alpha-keto acids accumulating in maple syrup urine disease. Biochim Biophys Acta. 2003 Nov 20;1639(3):232-8.[14636955 ]
  2. Sreekumar A, Poisson LM, Rajendiran TM, Khan AP, Cao Q, Yu J, Laxman B, Mehra R, Lonigro RJ, Li Y, Nyati MK, Ahsan A, Kalyana-Sundaram S, Han B, Cao X, Byun J, Omenn GS, Ghosh D, Pennathur S, Alexander DC, Berger A, Shuster JR, Wei JT, Varambally S, Beecher C, Chinnaiyan AM: Metabolomic profiles delineate potential role for sarcosine in prostate cancer progression. Nature. 2009 Feb 12;457(7231):910-4. doi: 10.1038/nature07762.[19212411 ]
  3. Martin PM, Gopal E, Ananth S, Zhuang L, Itagaki S, Prasad BM, Smith SB, Prasad PD, Ganapathy V: Identity of SMCT1 (SLC5A8) as a neuron-specific Na+-coupled transporter for active uptake of L-lactate and ketone bodies in the brain. J Neurochem. 2006 Jul;98(1):279-88.[16805814 ]
  4. Yudkoff M, Daikhin Y, Nissim I, Horyn O, Luhovyy B, Lazarow A, Nissim I: Brain amino acid requirements and toxicity: the example of leucine. J Nutr. 2005 Jun;135(6 Suppl):1531S-8S.[15930465 ]
  5. Chow LS, Albright RC, Bigelow ML, Toffolo G, Cobelli C, Nair KS: Mechanism of insulin's anabolic effect on muscle: measurements of muscle protein synthesis and breakdown using aminoacyl-tRNA and other surrogate measures. Am J Physiol Endocrinol Metab. 2006 Oct;291(4):E729-36. Epub 2006 May 16.[16705065 ]
  6. Wang Y, Holmes E, Nicholson JK, Cloarec O, Chollet J, Tanner M, Singer BH, Utzinger J: Metabonomic investigations in mice infected with Schistosoma mansoni: an approach for biomarker identification. Proc Natl Acad Sci U S A. 2004 Aug 24;101(34):12676-81. Epub 2004 Aug 16.[15314235 ]
  7. Mitch WE, Walser M, Sapir DG: Nitrogen sparing induced by leucine compared with that induced by its keto analogue, alpha-ketoisocaproate, in fasting obese man. J Clin Invest. 1981 Feb;67(2):553-62.[7462428 ]
  8. Schadewaldt P, Hammen HW, Ott AC, Wendel U: Renal clearance of branched-chain L-amino and 2-oxo acids in maple syrup urine disease. J Inherit Metab Dis. 1999 Aug;22(6):706-22.[10472531 ]
  9. Hachey DL, Patterson BW, Reeds PJ, Elsas LJ: Isotopic determination of organic keto acid pentafluorobenzyl esters in biological fluids by negative chemical ionization gas chromatography/mass spectrometry. Anal Chem. 1991 May 1;63(9):919-23.[1858984 ]

From T3DB


Taxonomic Classification

KingdomOrganic compounds
SuperclassOrganic acids and derivatives
ClassKeto acids and derivatives
SubclassShort-chain keto acids and derivatives
Intermediate Tree NodesNot available
Direct ParentShort-chain keto acids and derivatives
Alternative Parents
Molecular FrameworkAliphatic acyclic compounds
SubstituentsBranched fatty acid - Methyl-branched fatty acid - Short-chain keto acid - Alpha-keto acid - Fatty acyl - Alpha-hydroxy ketone - Ketone - Carboxylic acid derivative - Carboxylic acid - Monocarboxylic acid or derivatives - Carbonyl group - Hydrocarbon derivative - Organic oxygen compound - Organooxygen compound - Organic oxide - Aliphatic acyclic compound
DescriptionThis compound belongs to the class of organic compounds known as short-chain keto acids and derivatives. These are keto acids with an alkyl chain the contains less than 6 carbon atoms.

From ClassyFire