7-(Tert-butoxycarbonyl)-1-oxa-7-azaspiro[4.4]Nonane-2-carboxylic acid CAS 1268520-63-3
| CAS No. | 1268520-63-3 |
| Molecular Formula | C13H21NO5 |
| Molecular Weight | 271.31 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
7-(Tert-butoxycarbonyl)-1-oxa-7-azaspiro[4.4]Nonane-2-carboxylic acid (CAS 1268520-63-3), molecular formula C13H21NO5 and molecular weight 271.31 g/mol, is a CATO reference standard with documented purity and traceability.
7-(Tert-butoxycarbonyl)-1-oxa-7-azaspiro[4.4]Nonane-2-carboxylic acid (C13H21NO5) contains a nitrogen-containing heterocyclic scaffold, 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. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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 | C13H21NO5 |
| Molecular Weight | 271.31 g/mol |
| Appearance | Off-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, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1990 |
| Nitrogen Atoms | 1 |
Related Tert Standards
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