L-Aspartic acid 4-tert-butyl ester
Also known as: H-Asp(OtBu)-OH, H-Asp(OBu-t)-OH, (2S)-2-Amino-4-tert-butoxy-4-oxobutanoic acid, (2S)-2-Amino-4-[(2-methyl-2-propanyl)oxy]-4-oxobutanoic acid, L-Aspartic acid 4-tert-butyl ester, L-Aspartic acid β-tert-butyl ester
L-Aspartic acid 4-tert-butyl ester (CAS 3057-74-7) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C8H15NO4 and a molecular weight of 189.209 g/mol. Key properties include a melting point of 220°C (dec.), a boiling point of 318.7±37.0 °C at 760 mmHg, a density of 1.2±0.1 g/cm3 and a flash point of 146.5±26.5 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 3057-74-7
- Jingsj CID
- J-46186-9
- Molecular Formula
- C8H15NO4
- Molecular Weight
- 189.209 g/mol
- Category
- Organic Acids
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 220°C (dec.) |
|---|---|
| Boiling Point | 318.7±37.0 °C at 760 mmHg |
| Density | 1.2±0.1 g/cm3 |
| Flash Point | 146.5±26.5 °C |
| Exact Mass | 189.100113 |
| PSA | 89.62000 |
| LogP | 0.94 |
| Vapor Pressure | 0.0±1.5 mmHg at 25°C |
| Refractive Index | 1.476 |
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 | 2922509090 |
|---|---|
| Summary | 2922509090. other amino-alcohol-phenols, amino-acid-phenols and other amino-compounds with oxygen function. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:30.0% |
Frequently Asked Questions
What is the CAS number of L-Aspartic acid 4-tert-butyl ester?
The CAS number of L-Aspartic acid 4-tert-butyl ester is 3057-74-7.
What are the molecular formula and molecular weight of L-Aspartic acid 4-tert-butyl ester?
L-Aspartic acid 4-tert-butyl ester has molecular formula C8H15NO4 and molecular weight 189.209 g/mol.
What are the upstream and downstream products of L-Aspartic acid 4-tert-butyl ester?
For L-Aspartic acid 4-tert-butyl ester, Upstream Products: N-Benzyloxycarbonyl-L-aspartic acid 4-tert-butyl ester, L-Aspartic acid di-tert-butyl ester hydrochloride, Fmoc-Asp(OtBu)-OH; Downstream Products: N-Benzyloxycarbonyl-L-aspartic acid 4-tert-butyl ester, FMOC-ASP(OTBU)-OPFP, Fmoc-Asp(OtBu)-OH.
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-Aspartic acid 4-tert-butyl ester (CAS 3057-74-7)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-46186-9 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.