4-Methoxy-3-methyl-2H-chromen-2-one CAS 26952-87-4
| CAS No. | 26952-87-4 |
| Molecular Formula | C11H10O3 |
| Molecular Weight | 190.20 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), 4-Methoxy-3-methyl-2H-chromen-2-one meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
4-Methoxy-3-methyl-2H-chromen-2-one (CAS 26952-87-4) is a high-purity analytical reference standard with the molecular formula C11H10O3 and a molecular weight of 190.20 g/mol.
Structurally, 4-Methoxy-3-methyl-2H-chromen-2-one (C11H10O3) contains a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system. The molecule exhibits a degree of unsaturation (DBE) of 7.0, corresponding to approximately 7 ring(s) or double-bond equivalent(s). With a molecular weight of 190.20 g/mol, it falls into the medium-molecular-weight range. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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 | C11H10O3 |
| Molecular Weight | 190.20 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, ethanol, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1964 |
Related Methoxy Standards
- 5-Methoxy-7-methyl-1H-indazole-3-carbaldehyde (CAS 1000340-55-5)
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- 6-Methoxy-3-methyl-benzofuran-2-carbaldehyde (CAS 10410-28-3)
- 4-Methoxy-1H,1'H-[2,2'-bipyrrole]-5-carbaldehyde (CAS 10476-41-2)
- 7-Methoxy-2-methylquinazolin-4(3H)-one (CAS 105493-90-1)
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Recommended Standards
- 4-Methoxy-2-(prop-2-yn-1-yloxy)benzaldehyde (CAS 236390-57-1)
- 4-Methoxy-5-methyl-2H-chromen-2-one (CAS 53091-74-0)
- 4-Methoxy-2-(oxazol-2-yl)aniline (CAS 769921-95-1)
- 4-Methoxy-6-methyl-1H-indazole-3-carbaldehyde (CAS 885522-48-5)
- n-((3-Methylpyridin-2-yl)methyl)-9h-purin-6-amine (CAS 1333786-16-5)
- Gemeprost (CAS 64318-79-2)
- (1-(tert-butoxycarbonyl)-5-nitro-1H-indol-2-yl)boronic acid (CAS 1000068-67-6)
- (1R,2R,4S)-rel-Bicyclo[2.2.1]heptane-2-carbaldehyde (CAS 3574-55-8)
- Ethyl (Z)-3-(2-(2-cyanoacetyl)hydrazono)-3-phenylpropanoate (CAS 477862-16-1)
- 4-Chloro-1-methoxy-2-(2-methylallyl)benzene (CAS 951895-08-2)
- 3-MEthoxy-5-(trifluoromethoxy)benzoic acid methyl ester (CAS 1261583-60-1)
- Fudosteine Impurity 56 (CAS CATO-C4X-144756)
- 4-Hydroxy-2-(methylthio)benzaldehyde (CAS 1243396-42-0)
- Peptide 436 (CAS CATO-CPTD788436)
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