2-Hydroxy-2-methylbutyric acid
2-Hydroxy-2-methylbutyric acid (CAS: 3739-30-8), with the molecular formula C2H5C(CH3)(OH)CO2H and a molecular weight of 118.13 g/mol, is a valuable organic building block. This carboxylic acid features a tertiary alcohol group, making it a versatile intermediate. It is primarily utilised in chemical synthesis and research applications where precise molecular structures are required for developing new compounds and materials.

Organic Synthesis Intermediate
This compound serves as a key intermediate in complex organic synthesis pathways. Its bifunctional nature, containing both a hydroxyl and a carboxyl group, allows for diverse chemical modifications and the construction of more elaborate molecules.
Research and Development
Utilised in academic and industrial research settings, 2-Hydroxy-2-methylbutyric acid is employed in the exploration of novel chemical reactions and the development of new chemical entities.
Building Block for Fine Chemicals
As a C5 building block, it is instrumental in the synthesis of various fine chemicals. Its structure can be incorporated into target molecules requiring specific steric or functional group arrangements.
| Molecular weight | 118.13 |
|---|---|
| Linear formula | C2H5C(CH3)(OH)CO2H |
| Assay | 98% |
| Melting point | 73-75 °C(lit.) |

Hazard statements
- H315Causes skin irritation
- H319Causes serious eye irritation
- H335May cause respiratory irritation
Precautionary statements
- P261Avoid breathing dust, fume, gas or vapours
- P305IF IN EYES
| Protective equipment | dust mask type N95 (US), Eyeshields, Gloves |
|---|---|
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | Xi |
| Risk statements (R) | 36/37/38 |
| Safety statements (S) | 26-37/39 |
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 2-Hydroxy-2-methylbutyric acid used for?
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2-Hydroxy-2-methylbutyric acid is used as an intermediate in organic synthesis and as a building block for fine chemicals and in research and development applications.
What is the CAS number and chemical formula for 2-Hydroxy-2-methylbutyric acid?
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The CAS number is 3739-30-8, and the chemical formula is C2H5C(CH3)(OH)CO2H.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies 2-Hydroxy-2-methylbutyric acid with an assay of 98%. This product is intended for research and chemical synthesis purposes and is not supplied as USP, BP, EP, or any pharmacopoeia grade.
How should 2-Hydroxy-2-methylbutyric acid be handled safely?
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2-Hydroxy-2-methylbutyric acid is classified as an irritant. Handle with appropriate personal protective equipment, including Eyeshields, Gloves, and a dust mask type N95 (US). Avoid breathing dust. Ensure adequate ventilation. Refer to the Safety Data Sheet for comprehensive handling information.
Is 2-Hydroxy-2-methylbutyric acid exported globally by TSS?
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Yes, Tech Serve Solutions is a specialist global supplier and exporter of fine chemicals, including 2-Hydroxy-2-methylbutyric acid, serving customers worldwide.
How can I request a quote or sample for 2-Hydroxy-2-methylbutyric acid?
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To request a quote or sample for 2-Hydroxy-2-methylbutyric acid, please contact our sales team through the website or by phone. Our representatives will assist you with your inquiry.
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