Methyl 4-oxobutanoate
Methyl 4-oxobutanoate (CAS: 13865-19-5), with the linear formula H₃COCOCH₂CH₂CHO and a molecular weight of 116.12 g/mol, is a versatile organic compound. It serves as a valuable building block in chemical synthesis, particularly within the realms of organic chemistry and the development of pharmaceutical intermediates. This chemical, characterised by its aldehyde and ester functionalities, is crucial for constructing more complex molecular architectures.

Organic Synthesis Intermediate
Methyl 4-oxobutanoate is extensively used as a key intermediate in the synthesis of various organic compounds. Its bifunctional nature allows for diverse chemical transformations, making it a sought-after reagent in academic and industrial research laboratories.
Pharmaceutical Building Block
This compound acts as a crucial building block in the preparation of active pharmaceutical ingredients (APIs) and drug candidates. Its structural features are leveraged in the multi-step synthesis pathways common in medicinal chemistry.
Research and Development
Researchers in chemistry and materials science utilise Methyl 4-oxobutanoate for developing novel molecules and exploring new reaction methodologies. Its availability supports innovation in chemical research.
| Molecular weight | 116.12 |
|---|---|
| Linear formula | H3COCOCH2CH2CHO |
| Assay | 90% |
| Boiling point | 187-188 °C(lit.) |
| Density | 1.109 g/mL at 25 °C(lit.) |
| Refractive index | n20/D 1.424(lit.) |
| Storage temperature | 2-8°C |
| Impurities tested | ≤10% 4-oxobutanoic acid |

Hazard statements
- H315Causes skin irritation
- H319Causes serious eye irritation
Precautionary statements
- P305IF IN EYES
| Flash point | 86 °C / 186.8 °F |
|---|---|
| Transport (UN / ADR) | NA 1993 / PGIII |
| Water hazard class (WGK, DE) | 3 |
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 Methyl 4-oxobutanoate used for?
+
Methyl 4-oxobutanoate is primarily used as a versatile intermediate and building block in organic synthesis, particularly for the preparation of pharmaceutical intermediates and in research and development laboratories for creating novel organic compounds.
What is the CAS number and chemical formula for Methyl 4-oxobutanoate?
+
The CAS number for Methyl 4-oxobutanoate is 13865-19-5, and its linear formula is H₃COCOCH₂CH₂CHO.
What grade and purity does Tech Serve Solutions supply?
+
Tech Serve Solutions supplies Methyl 4-oxobutanoate with an assay of 90%, containing ≤10% 4-oxobutanoic acid as an impurity. We do not represent this product as USP, BP, or EP grade.
How should Methyl 4-oxobutanoate be handled and stored?
+
Methyl 4-oxobutanoate is classified with a Warning signal word, and hazards include skin irritation (H315) and serious eye irritation (H319). It should be stored at 2-8°C. Handle with appropriate personal protective equipment.
Is Methyl 4-oxobutanoate a controlled substance?
+
Based on the provided data, Methyl 4-oxobutanoate is not indicated as a controlled substance.
How is Methyl 4-oxobutanoate packed and shipped by TSS?
+
Tech Serve Solutions exports fine chemicals globally. Specific packing and shipping details for Methyl 4-oxobutanoate can be provided upon request, adhering to all relevant regulations.
How can I request a sample or quote for Methyl 4-oxobutanoate?
+
To request a sample or a quote for Methyl 4-oxobutanoate, please contact our sales team through the website or by phone.
▶ Related products

1-(2-Fluorobenzyl)piperazine
C11H15FN2
Chemical Synthesis
1-(2-Fluorophenyl)biguanide hydrochloride
Chemical Synthesis

1-(2-Fluorophenyl)cyclopropanecarboxylic acid
C10H9FO2
Chemical Synthesis
1-(2-Fluorophenyl)piperazine
C10H13FN2
Chemical Synthesis
1-(2-Fluorophenyl)piperazine monohydrochloride
C10H13FN2 · HCl
Chemical Synthesis
1-(2-Furoyl)-1H-benzotriazole
C11H7N3O2
Chemical Synthesis
1-(2-Furoyl)piperazine
C9H12N2O2
Chemical Synthesis
1-(2-Hydroxy-5-methylphenyl)-3-phenyl-1,3-propanedione
Chemical Synthesis
▶ Explore more

3-Methyl-1,5-di-p-tolyl-1,4-pentazadiene
Chemical Synthesis

3-Methyl-1,5-pentanediol
Chemical Synthesis

3-Methyl-1-(2-methylphenyl)-1H-pyrazol-5-amine
C11H13N3
Chemical Synthesis
3-Methyl-1-(3′-sulfoamidophenyl)-5-pyrazolone
C10H11N3O3S
Chemical Synthesis