L-tert-Leucine
Also known as: (S)-2-Amino-3,3-dimethylbutanoic acid, 3-Methyl-L-valine, L-α-tert-Butylglycine, (S)-tert-Leucine, L-2-Amino-3,3-dimethylbutanoic acid, L-2-tert-Butylglycine, tert-Butylglycine, L-Valine, 3-methyl-, 3-Methylvaline
L-tert-Leucine (CAS 20859-02-3) 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 300 °C, a boiling point of 217.7±23.0 °C at 760 mmHg, a density of 1.0±0.1 g/cm3 and a flash point of 85.5±22.6 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 20859-02-3
- Jingsj CID
- J-32812-1
- 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 | 300 °C |
|---|---|
| Boiling Point | 217.7±23.0 °C at 760 mmHg |
| Density | 1.0±0.1 g/cm3 |
| Flash Point | 85.5±22.6 °C |
| Exact Mass | 131.094635 |
| PSA | 63.32000 |
| LogP | 0.55 |
| Vapor Pressure | 0.1±0.9 mmHg at 25°C |
| Refractive Index | 1.464 |
| Additional Property | 125.5 g/L (20 ºC) |
Activity & Biological Data
| Additional Information | [1]. Luckose F, et al. Effects of amino acid derivatives on physical, mental, and physiological activities. Crit Rev Food Sci Nutr. 2015;55(13):1793-1144. |
|---|
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 L-tert-Leucine?
The CAS number of L-tert-Leucine is 20859-02-3.
What are the molecular formula and molecular weight of L-tert-Leucine?
L-tert-Leucine has molecular formula C6H13NO2 and molecular weight 131.173 g/mol.
What are the upstream and downstream products of L-tert-Leucine?
For L-tert-Leucine, Upstream Products: Boc-L-tert-leucine, L-tert-Leucine hydrochloride; Downstream Products: Boceprevir, (S)-2-(((Cyclopentyloxy)carbonyl)amino)-3,3-dimethylbutanoic acid, (S)-(-)-2-Amino-3,3-dimethyl-1,1-diphenyl-1-butanol.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "L-tert-Leucine (CAS 20859-02-3)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-32812-1 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.