8-Methoxy-3-tosyl-2H-chromen-2-one CAS 904449-37-2
| CAS No. | 904449-37-2 |
| Molecular Formula | C17H14O5S |
| Molecular Weight | 330.36 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-Methoxy-3-tosyl-2H-chromen-2-one (CAS 904449-37-2), molecular formula C17H14O5S and molecular weight 330.36 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, 8-Methoxy-3-tosyl-2H-chromen-2-one (C17H14O5S) contains a flavonoid core, a sulfone group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 11.0, corresponding to approximately 11 ring(s) or double-bond equivalent(s). With a molecular weight of 330.36 g/mol, it falls into the moderately-high-molecular-weight range. 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).
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 | C17H14O5S |
| Molecular Weight | 330.36 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) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1987 |
| Sulfur Atoms | 1 |
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Recommended Standards
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- 3-(Aminomethyl)-N-(2-amino-2-oxoethyl)-1,2,4-oxadiazole-5-carboxamide (CAS 1119452-03-7)
- 3-Hydroxy-[1,1'-biphenyl]-4,4'-dicarbonitrile (CAS 1261973-55-0)
- 2,3-Dimethoxybenzaldehyde oxime (CAS 5470-95-1)
- 2-(4-Bromo-2,6-dimethylphenyl)-1,3-Dioxolane (CAS 88679-81-6)
- (R)-2,4-Dimethoxy-5-(1-phenylallyl)phenol (CAS 82358-44-9)
- (4-(Difluoromethyl)pyridin-3-yl)methanol (CAS 1806784-30-4)
- 1-Cyclopentyl-3-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1h-pyrazole (CAS 2223042-85-9)
- Peptide Impurity 05 (CAS 2322924-83-2)
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