8-Acetyl-3-methyl-2-oxo-1-oxa-8-azaspiro[4.5]Dec-3-ene-4-carboxylic acid CAS 931690-92-5
| CAS No. | 931690-92-5 |
| Molecular Formula | C12H15NO5 |
| Molecular Weight | 253.25 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
8-Acetyl-3-methyl-2-oxo-1-oxa-8-azaspiro[4.5]Dec-3-ene-4-carboxylic acid (CAS 931690-92-5), molecular formula C12H15NO5 and molecular weight 253.25 g/mol, is a CATO reference standard with documented purity and traceability.
8-Acetyl-3-methyl-2-oxo-1-oxa-8-azaspiro[4.5]Dec-3-ene-4-carboxylic acid (C12H15NO5) 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. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
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 | C12H15NO5 |
| Molecular Weight | 253.25 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) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1987 |
| Nitrogen Atoms | 1 |
Recommended Standards
- 6-Methyl-9-oxo-9,10-dihydroacridine-4-carboxylic acid (CAS 78847-67-3)
- 9-Methoxy-10-nitroanthracene (CAS 42760-13-4)
- 6-Hydroxy-6-(2-nitrophenyl)hexanoic Acid (CAS 198065-04-2)
- Cbz-DL-homoserine (CAS 79074-03-6)
- 1-(2-(Methylamino)ethoxy)-3-(phenylthio)propan-2-ol (CAS 295362-06-0)
- Hydrolysine (CAS 12798-06-0)
- tert-Butyl (S)-3-([1,1'-biphenyl]-2-ylmethyl)piperazine-1-carboxylate (CAS 1260619-05-3)
- (R)-2-(((Benzyloxy)carbonyl)amino)-6-ureidohexanoic acid (CAS 218938-56-8)
- (4-(1H-1,2,3-Triazol-1-yl)piperidin-1-yl)(3-phenylbenzo[c]isoxazol-5-yl)methanone (CAS 1798538-71-2)
- N-((4-Methyl-2-(o-tolyl)thiazol-5-yl)methyl)thiophene-3-carboxamide (CAS 1448136-38-6)
- rac Methotrimeprazine-d6 Sulfoxide (CAS 1346601-89-5)
- 5-Acetylnicotinonitrile (CAS 135450-74-7)
- (9,9-Dipentyl-9h-fluoren-2-yl)boronic acid (CAS 400607-33-2)
- Semaglutide Impurity 164 (CAS CATO-C4X-2226164)
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