4-Methyl-2-oxovaleric acid
4-Methyl-2-oxovaleric acid (CAS 816-66-0) is an organic compound with the linear formula (CH3)2CHCH2COCOOH and a molecular weight of 130.14 g/mol. This alpha-keto acid serves as a valuable building block in organic synthesis. Its characteristic chemical structure makes it suitable for various chemical reactions and research applications within the broader fields of carbonyl compounds and carboxylic acids.
- IUPAC
- α-Ketoisocaproic acid,2-Oxoisocaproic acid,4-Methyl-2-oxopentanoic acid,Ketoleucine
- Synonyms
- α-Ketoisocaproic acid2-Oxoisocaproic acid4-Methyl-2-oxopentanoic acidKetoleucine

Organic Synthesis Intermediate
4-Methyl-2-oxovaleric acid is utilised as a key intermediate in the synthesis of more complex organic molecules. Its reactive keto and carboxylic acid functionalities allow for diverse chemical transformations, making it a useful component in multi-step synthetic pathways.
Research and Development
This compound is employed in laboratory settings for research purposes, contributing to the study of organic chemistry and the development of new chemical entities. It serves as a starting material or reagent in academic and industrial R&D projects.
Building Block for Specialty Chemicals
As a versatile building block, 4-Methyl-2-oxovaleric acid can be incorporated into the structure of specialty chemicals. Its specific arrangement of functional groups provides a foundation for creating novel compounds with tailored properties for various applications.
| Molecular weight | 130.14 |
|---|---|
| Linear formula | (CH3)2CHCH2COCOOH |
| Assay | ≥98.0% (T) |
| Boiling point | 82-83 °C/11 mmHg(lit.) |
| Density | 1.055 g/mL at 20 °C(lit.) |
| Refractive index | n20/D 1.431 |
| Storage temperature | 2-8°C |
| Melting point | 8-10 °C |

Hazard statements
- H314Causes severe skin burns and eye damage
Precautionary statements
- P280Wear protective gloves, clothing and eye/face protection
- P305IF IN EYES
- P310Immediately call a POISON CENTER or doctor
| Protective equipment | Faceshields, full-face respirator (US), Gloves, Goggles, multi-purpose combination respirator cartridge (US), type ABEK (EN14387) respirator filter |
|---|---|
| Transport (UN / ADR) | UN 3265 8 / PGIII |
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | C |
| Risk statements (R) | 34 |
| Safety statements (S) | 26-36/37/39-45 |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
Documentation
Every batch ships with a Certificate of Analysis covering assay, identity and purity; the grade is confirmed against your enquiry. Safety Data Sheets and technical data sheets are available on request.
Supply & logistics
Samples for technical evaluation; bulk MOQ by grade and packaging. In-stock material ships in 7–10 working days, worldwide, with full export documentation.
What is 4-Methyl-2-oxovaleric acid primarily used for?
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4-Methyl-2-oxovaleric acid is primarily used as a building block in organic synthesis and in research and development for creating new chemical entities.
What is the CAS number and chemical formula for 4-Methyl-2-oxovaleric acid?
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The CAS number is 816-66-0 and the linear chemical formula is (CH3)2CHCH2COCOOH.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies 4-Methyl-2-oxovaleric acid with an assay of ≥98.0% (T). We do not represent this product as meeting USP, BP, EP, or any pharmacopoeia standards.
How should 4-Methyl-2-oxovaleric acid be handled and stored?
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This compound is classified as Danger with hazard statement H314 (Causes severe skin burns and eye damage). Handling requires appropriate personal protective equipment including face shields, full-face respirators, gloves, and goggles. It should be stored at temperatures between 2-8°C.
Does Tech Serve Solutions export 4-Methyl-2-oxovaleric acid?
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Yes, Tech Serve Solutions is a global supplier and exporter of fine chemicals, including 4-Methyl-2-oxovaleric acid, and can accommodate international shipping requirements.
How can I request a sample or quote for 4-Methyl-2-oxovaleric acid?
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To request a sample or quote, please contact our sales department through the website or by phone, providing the product name and CAS number (816-66-0).
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