(S)-3-((tert-Butoxycarbonyl)amino)-5-methoxy-5-oxopentanoic acid CAS 82803-56-3
| CAS No. | 82803-56-3 |
| Molecular Formula | C11H19NO6 |
| Molecular Weight | 261.27 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
(S)-3-((tert-Butoxycarbonyl)amino)-5-methoxy-5-oxopentanoic acid (CAS 82803-56-3) is a high-purity analytical reference standard with the molecular formula C11H19NO6 and a molecular weight of 261.27 g/mol.
Owing to an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage, (S)-3-((tert-Butoxycarbonyl)amino)-5-methoxy-5-oxopentanoic acid is typically white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 261.27 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
CATO manufactures (S)-3-((tert-Butoxycarbonyl)amino)-5-methoxy-5-oxopentanoic acid under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C11H19NO6 |
| Molecular Weight | 261.27 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.) | 1980 |
| Nitrogen Atoms | 1 |
Recommended Standards
- (S)-2-((tert-Butoxycarbonyl)amino)hexanedioic acid (CAS 77302-72-8)
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- (S)-2-((tert-Butoxycarbonyl)(methyl)amino)-4-methoxy-4-oxobutanoic acid (CAS 2044709-98-8)
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Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com