3-Acetyl-7-methoxy-2H-1-benzopyran-2-one CAS 64267-19-2
| CAS No. | 64267-19-2 |
| Molecular Formula | C12H10O4 |
| Molecular Weight | 218.21 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 3-Acetyl-7-methoxy-2H-1-benzopyran-2-one.
3-Acetyl-7-methoxy-2H-1-benzopyran-2-one (CAS 64267-19-2), molecular formula C12H10O4 and molecular weight 218.21 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system, 3-Acetyl-7-methoxy-2H-1-benzopyran-2-one is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 218.21 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).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
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 | C12H10O4 |
| Molecular Weight | 218.21 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.) | 1975 |
Related Acetyl Standards
- 2-(6-Methoxy-1H-indol-3-yl)-2-oxoacetamide (CAS 103858-66-8)
- 5-[1-(4-Methoxy-phenyl)-meth-(Z)-ylidene]-imidazolidine-2,4-dione (CAS 108402-52-4)
- 3-Acetyl-8-methoxy-2H-cyclohepta[b]furan-2-one (CAS 1210-38-4)
- 5-Methoxy-2-(1H-pyrazol-1-yl)benzoic acid (CAS 1214622-45-3)
- 3-Acetyl-6-methoxy-2H-chromen-2-one (CAS 13252-80-7)
- 4-Methoxy-3-(1H-pyrazol-1-yl)benzoic acid (CAS 1368829-85-9)
- 3-Methoxy-4-(1H-pyrazol-4-yl)benzoic acid (CAS 1623119-25-4)
- 1-(4-Methoxy-2-nitrophenyl)-1H-pyrrole (CAS 59194-25-1)
Recommended Standards
- 3-Acetyl-7-hydroxy-2-methyl-4H-chromen-4-one (CAS 52751-46-9)
- 3-Acetyl-8-methoxy-2H-chromen-2-one (CAS 5452-39-1)
- 3-Acetyl-4-methoxy Coumarin (CAS 71703-23-6)
- 3-Amino-8-methoxyquinoline-6-carboxylic acid (CAS 2721373-57-3)
- Chlorophyll B (CAS 519-62-0)
- tert-Butyl 3-(2-(dimethylamino)ethoxy)propanoate (CAS 133803-62-0)
- Isopropyl 2-amino-5-methyl-4-phenylthiophene-3-carboxylate (CAS 627058-14-4)
- Ethyl 3-((6-oxo-1,6-dihydropyridazin-4-yl)oxy)propanoate (CAS 1346697-94-6)
- ethyl 3-(2,5-dimethylpyrazol-3-yl)-3-oxo-propanoate (CAS 959312-57-3)
- H-DL-Ala-βNA · HCl (CAS 74144-49-3)
- Cyclopropyl(oxan-4-yl)methanamine (CAS 1340465-57-7)
- (3R,4S)-4-(3-cyanophenyl)pyrrolidine-3-carboxylic acid hydrochloride (CAS 1049734-95-3)
- N-(3-methoxypropyl)-5-(1,2,3-thiadiazol-5-yl)thiophene-2-sulfonamide (CAS 477867-57-5)
- [2-31]-Semaglutide C (x TFA Salt) (CAS CATO-C4X-2226118)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com