8-tert-Butyl-4-(thiophene-2-carbonyl)-1-oxa-4-azaspiro[4.5]decane-3-carboxylic acid CAS 1326809-96-4
| CAS No. | 1326809-96-4 |
| Molecular Formula | C18H25NO4S |
| Molecular Weight | 351.46 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
8-tert-Butyl-4-(thiophene-2-carbonyl)-1-oxa-4-azaspiro[4.5]decane-3-carboxylic acid (CAS 1326809-96-4) is a high-purity analytical reference standard with the molecular formula C18H25NO4S and a molecular weight of 351.46 g/mol.
8-tert-Butyl-4-(thiophene-2-carbonyl)-1-oxa-4-azaspiro[4.5]decane-3-carboxylic acid (C18H25NO4S) contains a flavonoid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage. 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.
Physical & Chemical Properties
| Molecular Formula | C18H25NO4S |
| Molecular Weight | 351.46 g/mol |
| 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 |
| Degree of Unsaturation (DBE) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1991 |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Recommended Standards
- N-([1,1'-Biphenyl]-4-yl)dibenzo[b,d]thiophen-2-amine (CAS 1300028-93-6)
- 9-((5,6,7,8-Tetrahydronaphthalen-2-yl)sulfonyl)-1,5-dioxa-9-azaspiro[5.5]undecane (CAS 1328339-65-6)
- N-([1,1'-Biphenyl]-4-yl)dibenzo[b,d]thiophen-3-amine (CAS 1290039-87-0)
- O-((1R,2R,4R)-4-((tert-butoxycarbonyl)amino)-2-hydroxycyclohexyl) Benzothioate (CAS 1350636-89-3)
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