DL-Leucine
Also known as: 2-Amino-4-methylpentanoic acid, (±)-2-Amino-4-methylpentanoic acid, α-Aminoisocaproic acid, DL-2-Amino-4-methylpentanoic acid, DL-Leu, H-DL-Leu-OH, (RS)-Leucine, (±)-Leucine, Leucine, DL-
DL-Leucine (CAS 328-39-2) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C6H13NO2 and a molecular weight of 131.173 g/mol. Key properties include a melting point of 293-296ºC, a boiling point of 225.8±23.0 °C at 760 mmHg, a density of 1.0±0.1 g/cm3 and a flash point of 90.3±22.6 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 328-39-2
- Jingsj CID
- J-31544-6
- Molecular Formula
- C6H13NO2
- Molecular Weight
- 131.173 g/mol
- Category
- Organic Acids
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 293-296ºC |
|---|---|
| Boiling Point | 225.8±23.0 °C at 760 mmHg |
| Density | 1.0±0.1 g/cm3 |
| Flash Point | 90.3±22.6 °C |
| Exact Mass | 131.094635 |
| PSA | 63.32000 |
| LogP | 0.73 |
| Vapor Pressure | 0.0±0.9 mmHg at 25°C |
| Refractive Index | 1.463 |
| Stability | Stable. Incompatible with strong oxidizing agents. |
| Additional Property | soluble |
Customs & Trade Information
| HS Code | 2922499990 |
|---|---|
| Summary | HS:2922499990 other amino-acids, other than those containing more than one kind of oxygen function, and their esters; salts thereof 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:6.5% General tariff:30.0% |
Frequently Asked Questions
What is the CAS number of DL-Leucine?
The CAS number of DL-Leucine is 328-39-2.
What are the molecular formula and molecular weight of DL-Leucine?
DL-Leucine has molecular formula C6H13NO2 and molecular weight 131.173 g/mol.
What are the upstream and downstream products of DL-Leucine?
For DL-Leucine, Upstream Products: 4-Methyl-2-oxovaleric acid, Boc-L-leucine hydrate, Triethylamine; Downstream Products: PTH-leucine, Isovaleric acid, Ammonia.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "DL-Leucine (CAS 328-39-2)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-31544-6 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.