ChemicalBook >> CAS DataBase List >>4-Methyl-2-oxovaleric acid

4-Methyl-2-oxovaleric acid

CAS No.
816-66-0
Chemical Name:
4-Methyl-2-oxovaleric acid
Synonyms
KETOLEUCINE;4-METHYL-2-OXOPENTANOIC ACID;ALPHA KETOISOCAPROATE;ALPHA-KETOISOCAPROIC ACID;2-keto-isocaproate;2-OXOISOCAPROIC ACID;2-Oxo-4-methylpentanoic acid;ALPHA-KETOLEUCINE;Methyl-2-oxovaleric;Isopropylpyruvicacid
CBNumber:
CB5157543
Molecular Formula:
C6H10O3
Molecular Weight:
130.14
MDL Number:
MFCD00066204
MOL File:
816-66-0.mol
MSDS File:
SDS
TDS File:
TDS
Last updated:2026-07-16 07:06:08

4-Methyl-2-oxovaleric acid Properties

Melting point 8-10 °C
Boiling point 82-83 °C11 mm Hg(lit.)
Density 1.055 g/mL at 20 °C(lit.)
refractive index n20/D 1.431
FEMA 3871 | 4-METHYL-2-OXOPENTANOIC ACID
FLAVIS Number 08.052 | 4-Methyl-2-oxovaleric acid
storage temp. 2-8°C
solubility DMF: 30 mg/ml; DMSO: 30 mg/ml; Ethanol: 30 mg/ml
pka 2.65±0.54(Predicted)
form clear liquid
color Colorless to Yellow
Odor fruity
Odor Type fruity
Water Solubility Soluble in water.
JECFA Number 633
BRN 1701823
InChI 1S/C6H10O3/c1-4(2)3-5(7)6(8)9/h4H,3H2,1-2H3,(H,8,9)
InChIKey BKAJNAXTPSGJCU-UHFFFAOYSA-N
SMILES CC(C)CC(=O)C(O)=O
LogP 0.17
CAS DataBase Reference 816-66-0(CAS DataBase Reference)
Substances Added to Food (formerly EAFUS) 4-METHYL-2-OXOPENTANOIC ACID
FDA UNII 4GUJ8AH400
NIST Chemistry Reference 4-Methyl-2-oxovaleric acid(816-66-0)
EPA Substance Registry System .alpha.-Ketoisocaproic acid (816-66-0)
UNSPSC Code 12352100
NACRES NA.22

SAFETY

Risk and Safety Statements

Symbol(GHS)  Corrosion (GHS05)
GHS05
Signal word  Danger
Hazard statements  H314
Precautionary statements  P280-P303+P361+P353-P304+P340+P310-P305+P351+P338-P363-P405
PPE Faceshields, Gloves, Goggles, type ABEK (EN14387) respirator filter
Hazard Codes  C
Risk Statements  34
Safety Statements  26-36/37/39-45
RIDADR  UN 3265 8/PG 3
WGK Germany  3
3-9-13
TSCA  TSCA listed
HS Code  2918.30.9000
HazardClass  8
PackingGroup  III
Storage Class 8A - Combustible corrosive hazardous materials
Hazard Classifications Skin Corr. 1B
NFPA 704
0
3 0

4-Methyl-2-oxovaleric acid price More Price(35)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich 68255 4-Methyl-2-oxovaleric acid ≥98.0% (T) 816-66-0 1g $119 2026-04-30 Buy
Sigma-Aldrich 68255 4-Methyl-2-oxovaleric acid ≥98.0% (T) 816-66-0 5g $299 2026-04-30 Buy
TCI Chemical K0025 4-Methyl-2-oxovaleric Acid >95.0%(GC)(T) 816-66-0 5g $215 2026-04-30 Buy
Cayman Chemical 34749 α-Ketoisocaproic Acid ≥95% 816-66-0 1g $62 2026-04-30 Buy
Biosynth FK152625 α-Ketoisocaproicacid 816-66-0 1000mg $180 2026-06-04 Buy
Product number Packaging Price Buy
68255 1g $119 Buy
68255 5g $299 Buy
K0025 5g $215 Buy
34749 1g $62 Buy
FK152625 1000mg $180 Buy

4-Methyl-2-oxovaleric acid Chemical Properties,Uses,Production

Occurrence

Reported found in banana, asparagus, cheese, white wine, cocoa, blue cheese and provolone cheese.

Uses

4-Methyl-2-oxovaleric acid is an intermediate in the metabolism of leucine and also used as flavoring agents.

Definition

ChEBI: A 2-oxo monocarboxylic acid that is pentanoic acid (valeric acid) substituted with a keto group at C-2 and a methyl group at C-4. A metabolite that has been found to accumulate in maple syrup urine disease.

in vivo

4-Methyl-2-oxopentanoic acid (4 mol/L; ICV; 1 h and 15 d) causes impairment of habitual memory and long-term memory in rats[3]. 4-Methyl-2-oxopentanoic acid (400 μmol/kg/h; carotid arch injection; single dose injection 60 min) increases porcine skeletal muscle protein synthesis and plasma leucine levels[4].

Animal Model:Thirty-day-old rats were anesthetized with a mixture of ketamine and xylazine (HY-B0443)[3]
Dosage:4 mol/L, Administer 2 μL
Administration:Intracerebroventricular injection (ICV); 1 h and 15 days
Result:Increased TBARS levels, protein carbonyl content and DNA damage in the hippocampus, striatum and cerebral cortex. SOD activity in the hippocampus and striatum increased 1 hour after injection, and SOD activity in the striatum decreased 15 days later.
Animal Model:Piglets were deprived of feed for 12-14 hours before infusion[4]
Dosage:400 μmol/kg
Administration:Inject into the aortic arch; the initial injection dose is 148 μmol/kg in the first 10 minutes, and the continuous infusion dose is 400 μmol/kg
Result:Increased phosphorylation of eukaryotic initiation factor (eIF) 4E binding protein-1 (4E-BP1) and eIF4G in skeletal muscle and increased the formation of active eIF4G×eIF4E complexes.

IC 50

Human Endogenous Metabolite

61-90-5
127-17-3
816-66-0
56-41-7
Synthesis of 4-Methyl-2-oxovaleric acid from L-Leucine and Pyruvic acid

4-Methyl-2-oxovaleric acid Preparation Products And Raw materials

4-Methyl-2-oxovaleric acid Suppliers

Global( 197)Suppliers
Supplier Tel Email Country ProdList Advantage
Shanghai Xingui Biotechnology Co., Ltd. 15121041756 xingui2022@126.com China 9985 58
BTC Pharmaceutical CO. Ltd +86-15716293042 15716293042 info@btcpharm.com China 823 55
J & K SCIENTIFIC LTD. 18210857532 18210857532 jkinfo@jkchemical.com China 96815 76
Meryer (Shanghai) Chemical Technology Co., Ltd. 4006356688 18621169109 market03@meryer.com China 40202 62
Alfa Aesar 400-6106006 saleschina@alfa-asia.com China 30103 84
TCI (Shanghai) Development Co., Ltd. 021-67121386 Sales-CN@TCIchemicals.com China 24512 81
Energy Chemical 400-0056266 sales8178@energy-chemical.com China 44850 61
Adamas Reagent, Ltd. 400-6009262 15618770481 yhx@titansci.com China 14098 59
Shanghai Hanhong Scientific Co.,Ltd. 021-54306202 13764082696 info@hanhongsci.com China 42917 64
Syntechem Co.,Ltd info@syntechem.com China 12973 57

View Lastest Price from 4-Methyl-2-oxovaleric acid manufacturers

Image Update time Product Price Min. Order Purity Supply Ability Manufacturer
4-Methyl-2-oxopentanoic acid pictures 2026-07-15 4-Methyl-2-oxopentanoic acid
816-66-0
$53.00-113.00 99.09% 10g TargetMol Chemicals Inc.
4-Methyl-2-oxovaleric acid pictures 2019-12-20 4-Methyl-2-oxovaleric acid
816-66-0
$1.00 1KG 99% 100kg Career Henan Chemical Co
4-Methyl-2-oxovaleric acid pictures 2019-11-19 4-Methyl-2-oxovaleric acid
816-66-0
1g 95%min 20kf/month Nanjing jinheyou Trading Co., Ltd.

4-Methyl-2-oxovaleric acid Spectrum

ALPHA-KETOISOCAPROIC ACID 4-METHYL-2-OXOVALERIC ACID 4-Methyl-2-oxovaleric acid >=98.0% (T) Methyl-2-oxovaleric 2-KETO-ISO-CAPROIC ACID 2-keto-isocaproate 4-methyl-2-oxo-pentanoicaci Isopropylpyruvicacid Pentanoic acid, 4-methyl-2-oxo- 4-METHYL-2-OXOVALERIC ACID 95+% ALPHA-KETOLEUCINE 2-Oxoisocaproic acid, 4-Methyl-2-oxopentanoic acid, Ketoleucine 2-Oxo-4-methylpentanoic acid KETOISOCAPROIC ACID, ALPHA-(P) 2-Keto-4-methylpentanoic Acid 4-Methyl-2-oxopentanoic Acid 2-KETO-ISO-HEXANOIC ACID 2-KETO-4-METHYL-N-PENTANOIC ACID 2-KETO-4-METHYLPENTANOIC ACID 2-OXO-4-METHYLVALERIC ACID 2-OXOISOCAPROIC ACID A-KETOISOCAPROIC ACID 4-Methyl-2-oxovalericAcid> 4-Methyl-2-oxovaleric acid -98% α-Ketoisocaproic Acid KETOISOCAPROIC ACID, ALPHA- ethyl-2-oxovaleric acid 4-Methyl-2-oxopentanoic acid, 10 mM in DMSO 4-Methyl-2-oxopentanoic acid (Standard) 4-METHYL-2-OXOPENTANOIC ACID ALPHA KETOISOCAPROATE KETOLEUCINE α-Ketoleucine/α-Ketoleucine 816-66-0 CH32CHCH2COCOOH Organic Building Blocks Building Blocks Carbonyl Compounds Carboxylic Acids C6