3-Methylpentanoic acid
Also known as: 3-Methylvaleric acid, DL-3-Methylvaleric acid, 3-Methyl-n-valeric acid, beta-Methylvaleric acid, FEMA 3437, sec-Butylacetic acid, Anteisohexanoic acid
3-Methylpentanoic acid (CAS 105-43-1) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C6H12O2 and a molecular weight of 116.158 g/mol. Key properties include a melting point of -41 °C, a boiling point of 199.0±0.0 °C at 760 mmHg, a density of 0.9±0.1 g/cm3 and a flash point of 85.0±0.0 °C. It is classified under GHS with signal word Danger and hazard statements H314 — Causes severe skin burns and eye damage. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 105-43-1
- Jingsj CID
- J-36292-5
- Molecular Formula
- C6H12O2
- Molecular Weight
- 116.158 g/mol
- Category
- Organic Acids
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | -41 °C |
|---|---|
| Boiling Point | 199.0±0.0 °C at 760 mmHg |
| Density | 0.9±0.1 g/cm3 |
| Flash Point | 85.0±0.0 °C |
| Exact Mass | 116.083733 |
| PSA | 37.30000 |
| LogP | 1.66 |
| Vapor Pressure | 0.1±0.8 mmHg at 25°C |
| Refractive Index | 1.425 |
| Additional Property | insoluble |
GHS Safety & Compliance
- H314 — Causes severe skin burns and eye damage
Activity & Biological Data
| Target | Human Endogenous Metabolite |
|---|
Customs & Trade Information
| HS Code | 2915900090 |
|---|---|
| Summary | 2915900090 other saturated acyclic monocarboxylic acids and their anhydrides, halides, peroxides and peroxyacids; their halogenated, sulphonated, nitrated or nitrosated derivatives VAT:17.0% Tax rebate rate:9.0% Supervision conditions:AB(certificate of inspection for goods inward,certificate of inspection for goods outward) MFN tariff:5.5% General tariff:30.0% |
Frequently Asked Questions
What is the CAS number of 3-Methylpentanoic acid?
The CAS number of 3-Methylpentanoic acid is 105-43-1.
What are the molecular formula and molecular weight of 3-Methylpentanoic acid?
3-Methylpentanoic acid has molecular formula C6H12O2 and molecular weight 116.158 g/mol.
Is 3-Methylpentanoic acid hazardous?
3-Methylpentanoic acid has GHS signal word Danger and hazard statements H314 — Causes severe skin burns and eye damage.
What are the upstream and downstream products of 3-Methylpentanoic acid?
For 3-Methylpentanoic acid, Upstream Products: 3-Methyl-1-pentanol, 4-methyl-2-hexanol, 2-Methylbutanoyl chloride; Downstream Products: 3-Methylpentanoyl chloride, Valnoctamide, Methyl 3-methylpentanoate.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "3-Methylpentanoic acid (CAS 105-43-1)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-36292-5 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.