4-((2-((Tert-butoxycarbonyl)amino)ethyl)amino)-4-oxobutanoic acid CAS 891781-87-6
| CAS No. | 891781-87-6 |
| Molecular Formula | C11H20N2O5 |
| Molecular Weight | 260.29 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
4-((2-((Tert-butoxycarbonyl)amino)ethyl)amino)-4-oxobutanoic acid (CAS 891781-87-6), molecular formula C11H20N2O5 and molecular weight 260.29 g/mol, is a CATO reference standard with documented purity and traceability.
4-((2-((Tert-butoxycarbonyl)amino)ethyl)amino)-4-oxobutanoic acid (C11H20N2O5) contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage. It is notably hygroscopic, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C11H20N2O5 |
| Molecular Weight | 260.29 g/mol |
| Appearance | White to pale yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1987 |
| Nitrogen Atoms | 2 |
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- 1-tert-butoxycarbonyl-3,3-dimethyl-1,3-azasilolidine-5-carboxylic acid (CAS 1822551-68-7)
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Recommended Standards
- 3-tert-Butyl-1-(4-Nitrophenyl)-1H-pyrazol-5-amine (CAS 251658-55-6)
- 4-((2-(1H-Indol-3-yl)ethyl)amino)-4-oxobutanoic acid (CAS 92256-33-2)
- 3-tert-Butyl-1-(3-Nitrophenyl)-1H-pyrazol-5-amine (CAS 476637-05-5)
- 4-(2-(1H-indol-3-yl)acetamido)butanoic acid (CAS 79438-89-4)
- 3-Oxa-8-thia-1-azaspiro[4.5]decane-2,4-dione (CAS 39974-66-8)
- Methyl 3-(2-chloroacetamido)-3-(4-isopropylphenyl)propanoate (CAS 866018-06-6)
- 2-Bromo-N-((tetrahydro-2h-pyran-4-yl)methyl)aniline (CAS 1249747-21-4)
- N-Methyl-N-phenylmethacrylamide (CAS 15796-89-1)
- 1-Trityl-1H-pyrazol-4-ol (CAS 226989-36-2)
- 1-Bromo-4-(tert-butoxymethyl)benzene (CAS 22807-80-3)
- 1-((4-Nitrophenyl)thio)propan-2-one (CAS 25784-85-4)
- FPR A14 (CAS 329691-12-5)
- Dobutamine Impurity 43 HCl (CAS CATO-C4X-129843)
- Semaglutide impurity 85 (CAS CATO-C4X-222685)
Why CATO?
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