Fmoc-Asp(OtBu)-OH
Also known as: Fmoc-L-aspartic acid 4-tert-butyl ester, (2S)-4-tert-Butoxy-2-{[(9H-fluoren-9-ylmethoxy)carbonyl]amino}-4-oxobutanoic acid, 4-tert-Butyl hydrogen N-((9H-fluoren-9-ylmethoxy)carbonyl)-L-aspartate, N-α-FMOC-L-aspartic acid β-tert-butyl ester, Fmoc-(tBu)Asp-OH, EINECS 276-251-7
Fmoc-Asp(OtBu)-OH (CAS 71989-14-5) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C23H25NO6 and a molecular weight of 411.448 g/mol. Key properties include a melting point of 148-150 °C (dec.), a boiling point of 620.8±55.0 °C at 760 mmHg, a density of 1.3±0.1 g/cm3 and a flash point of 329.3±31.5 °C. It is listed by 1 supplier; request a quote for pricing. Record last updated Aug 21, 2026.
- CAS No.
- 71989-14-5
- Jingsj CID
- J-8293-9
- Molecular Formula
- C23H25NO6
- Molecular Weight
- 411.448 g/mol
- Category
- Organic Acids
- Last updated
- 8/21/2026
| Supplier | Purity / Pack | Base Price | Unit Price | Origin | |
|---|---|---|---|---|---|
Made to Order | - | - | CN China |
Physicochemical Properties
| Melting Point | 148-150 °C (dec.) |
|---|---|
| Boiling Point | 620.8±55.0 °C at 760 mmHg |
| Density | 1.3±0.1 g/cm3 |
| Flash Point | 329.3±31.5 °C |
| Exact Mass | 411.168182 |
| PSA | 101.93000 |
| LogP | 5.16 |
| Vapor Pressure | 0.0±1.9 mmHg at 25°C |
| Refractive Index | 1.576 |
Activity & Biological Data
| Additional Information | [1]. Esquivel J B, et al. Chiral HPLC separation of protected amino acids. Journal of liquid chromatography & related technologies, 1998, 21(6): 777-791. |
|---|
Customs & Trade Information
| HS Code | 2924299090 |
|---|---|
| Summary | 2924299090. other cyclic amides (including cyclic carbamates) and their derivatives; salts thereof. 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 Fmoc-Asp(OtBu)-OH?
The CAS number of Fmoc-Asp(OtBu)-OH is 71989-14-5.
What are the molecular formula and molecular weight of Fmoc-Asp(OtBu)-OH?
Fmoc-Asp(OtBu)-OH has molecular formula C23H25NO6 and molecular weight 411.448 g/mol.
Which suppliers offer Fmoc-Asp(OtBu)-OH?
1 supplier(s) listed; request a quote for pricing.
What are the upstream and downstream products of Fmoc-Asp(OtBu)-OH?
For Fmoc-Asp(OtBu)-OH, Upstream Products: Fmoc-OSu, L-Aspartic acid 4-tert-butyl ester, 9-Fluorenylmethyl pentafluorophenyl carbonate; Downstream Products: L-Aspartic acid, L-Aspartic acid 4-tert-butyl ester, FMOC-ASP(OTBU)-OPFP.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "Fmoc-Asp(OtBu)-OH (CAS 71989-14-5)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-8293-9 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.