4-Methyl-7-(2-oxopropoxy)-2h-chromen-2-one CAS 68454-18-2
| CAS No. | 68454-18-2 |
| Molecular Formula | C13H12O4 |
| Molecular Weight | 232.23 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Owing to a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system, 4-Methyl-7-(2-oxopropoxy)-2h-chromen-2-one is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 232.23 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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).
4-Methyl-7-(2-oxopropoxy)-2h-chromen-2-one (CAS 68454-18-2) is a high-purity analytical reference standard with the molecular formula C13H12O4 and a molecular weight of 232.23 g/mol.
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 | C13H12O4 |
| Molecular Weight | 232.23 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 chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1976 |
Related Methyl Standards
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- 7-(2-Oxopropoxy)-2H-chromen-2-one (CAS 36914-75-7)
- 4-Ethyl-7-(2-oxopropoxy)-2H-chromen-2-one (CAS 307546-48-1)
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Recommended Standards
- 4-Methyl-2-oxo-2H-chromen-7-yl propionate (CAS 3361-13-5)
- 4-Methyl-7-(oxiran-2-ylmethoxy)-2H-chromen-2-one (CAS 24689-27-8)
- 4-Hydroxy-6-(4-hydroxyphenethyl)-2H-pyran-2-one (CAS 920318-17-8)
- 5-((O-tolyloxy)methyl)furan-2-carboxylic acid (CAS 832739-12-5)
- 2-(Chloromethyl)-3-(difluoromethyl)-4-iodo-6-methoxypyridine (CAS 1807131-34-5)
- 2,5-Difluoroterephthalic acid (CAS 655-14-1)
- 3-Iodo-1-[(1-methyl-4-piperidinyl)methyl]-1H-pyrazolo[3,4-d]pyrimidin-4-amine (CAS 1411763-96-6)
- 4-(5-(2-Hydroxyethyl)-4-methylpyridin-2-yl)piperazine-1-carbaldehyde (CAS 1355214-48-0)
- Ethyl 2-chloro-2-ethoxyacetate (CAS 34006-60-5)
- 8-Butyl-5,6-dimethoxy-2-methyl-1,2,3,4-tetrahydroisoquinoline (CAS 87665-05-2)
- (T-4)-Bis[1-(dimethylamino-κN)-2-methyl-2-propanolato-κO]lead (CAS 934302-16-6)
- tert-butyl (R)-(2-oxo-2,3,4,5-tetrahydro-1H-benzo[b]azepin-3-yl)carbamate (CAS 145485-03-6)
- 5-Aminoquinazoline-2,4(1H,3H)-dione (CAS 1002097-16-6)
- Peptide Impurity 12 (CAS CATO-CPTD788812)
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