Methyl 4-methyl-3-oxopentanoate
Also known as: Methyl isobutyrylacetate, Isobutyrylacetic acid methyl ester, 4-Methyl-3-oxovaleric acid methyl ester, Methyl 4-methyl-3-oxovalerate, Methyl 3-oxoisocaproate, Pentanoic acid, 4-methyl-3-oxo-, methyl ester, IBEM, MIBA, Methyl isobutyrylacetate for synthesis, EINECS 418-900-0, MFCD00040499
Methyl 4-methyl-3-oxopentanoate (CAS 42558-54-3) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C7H12O3 and a molecular weight of 144.168 g/mol. Key properties include a melting point of -75°C, a boiling point of 185.8±8.0 °C at 760 mmHg, a density of 1.0±0.1 g/cm3 and a flash point of 68.9±18.5 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 42558-54-3
- Jingsj CID
- J-48749-0
- Molecular Formula
- C7H12O3
- Molecular Weight
- 144.168 g/mol
- Category
- Organic Acids
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | -75°C |
|---|---|
| Boiling Point | 185.8±8.0 °C at 760 mmHg |
| Density | 1.0±0.1 g/cm3 |
| Flash Point | 68.9±18.5 °C |
| Exact Mass | 144.078644 |
| PSA | 43.37000 |
| LogP | 1.06 |
| Vapor Pressure | 0.7±0.4 mmHg at 25°C |
| Refractive Index | 1.414 |
Customs & Trade Information
| HS Code | 2918300090 |
|---|---|
| Summary | 2918300090 other carboxylic acids with aldehyde or ketone function but without other oxygen function, their anhydrides, halides, peroxides, peroxyacids and their derivatives。Supervision conditions:None。VAT:17.0%。Tax rebate rate:9.0%。MFN tariff:6.5%。General tariff:30.0% |
Frequently Asked Questions
What is the CAS number of Methyl 4-methyl-3-oxopentanoate?
The CAS number of Methyl 4-methyl-3-oxopentanoate is 42558-54-3.
What are the molecular formula and molecular weight of Methyl 4-methyl-3-oxopentanoate?
Methyl 4-methyl-3-oxopentanoate has molecular formula C7H12O3 and molecular weight 144.168 g/mol.
What are the upstream and downstream products of Methyl 4-methyl-3-oxopentanoate?
For Methyl 4-methyl-3-oxopentanoate, Upstream Products: 3-Methyl-2-butanone, Dimethyl Carbonate, Methyl 4-methyl-2-pentenoate; Downstream Products: 2H-1-Benzopyran-2-one,7-hydroxy-4-(1-methylethyl)-, Methyl 3-(2,6-dichlorophenyl)-5-isopropylisoxazole-4-carboxylate, 2-amino-4-hydroxy-6-isopropylpyrimidine.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "Methyl 4-methyl-3-oxopentanoate (CAS 42558-54-3)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-48749-0 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.