NO-Aspirin CAS 287118-97-2
| CAS No. | 287118-97-2 |
| Molecular Formula | C16H13NO7 |
| Molecular Weight | 331.28 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including NO-Aspirin.
NO-Aspirin (CAS 287118-97-2) is a high-purity analytical reference standard with the molecular formula C16H13NO7 and a molecular weight of 331.28 g/mol.
Based on its molecular formula C16H13NO7, NO-Aspirin contains a flavonoid core, an amide group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 331.28 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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 | C16H13NO7 |
| Molecular Weight | 331.28 g/mol |
| Appearance | Pale yellow to 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 |
| Degree of Unsaturation (DBE) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Nitrogen Atoms | 1 |
Related NO Standards
Recommended Standards
- N-[2-(2,6-dioxo-3-piperidyl)-1,3-dioxo-isoindolin-4-yl]-2-hydroxy-acetamide (CAS 444289-33-2)
- Thalidomide-NH-CH2-COOH (CAS 927670-97-1)
- Methyl 4-(4-formyl-2-nitrophenoxy)-3-methoxybenzoate (CAS 439095-22-4)
- Methyl 3-(6-oxo-2-propyl-4-(trifluoromethyl)-2,6-dihydro-7h-pyrazolo[3,4-b]pyridin-7-yl)propanoate (CAS 1018166-01-2)
- 4,5-Bis(2,3-difluorophenyl)-2-fluoropyridine (CAS 1261482-76-1)
- ethyl 1-(4-chlorobenzyl)-6-oxo-6,7-dihydro-1H-pyrazolo[3,4-b]pyridine-4-carboxylate (CAS 1245807-75-3)
- Benzyl 2-(6-amino-2-methylpyridin-3-yl)pyrrolidine-1-carboxylate (CAS 1352499-46-7)
- 4-Amino-3,5-Dimethoxyphenol (CAS 20032-71-7)
- 3-((Thiophen-2-ylmethyl)amino)propan-1-ol (CAS 93448-51-2)
- Arotinolol Impurity 73 (CAS CATO-C4X-185473)
- 8-Benzyl-3-(methylsulfonyl)-3,8-diazabicyclo[3.2.1]Octane (CAS 2139492-02-5)
- 1-(4-Chlorophenyl)-3-methylbutan-2-one (CAS 65248-53-5)
- 6-(Indolin-1-yl)-2-methylnicotinonitrile (CAS 1355217-69-4)
- Semaglutide Impurity 130 (CAS 1188328-40-6)
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