5-Methoxy-4-oxo-4H-chromene-3-carbaldehyde CAS 49619-59-2
| CAS No. | 49619-59-2 |
| Molecular Formula | C11H8O4 |
| Molecular Weight | 204.18 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 5-Methoxy-4-oxo-4H-chromene-3-carbaldehyde.
5-Methoxy-4-oxo-4H-chromene-3-carbaldehyde (CAS 49619-59-2) is a high-purity analytical reference standard with the molecular formula C11H8O4 and a molecular weight of 204.18 g/mol.
Owing to a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system, 5-Methoxy-4-oxo-4H-chromene-3-carbaldehyde is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 204.18 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
As a certified reference material (CRM), 5-Methoxy-4-oxo-4H-chromene-3-carbaldehyde 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.
Physical & Chemical Properties
| Molecular Formula | C11H8O4 |
| Molecular Weight | 204.18 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, 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) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1971 |
Related Methoxy Standards
- 2-methoxy-5-nitro-pyridine-3-carboxylic acid (CAS 1020635-54-4)
- 6-Methoxy-1,5-naphthyridine-4-carboxylic acid (CAS 1211522-19-8)
- 3-Methoxy-4-(1,2,4-oxadiazol-3-yl)benzaldehyde (CAS 1262412-76-9)
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- 6-Methoxy-3-nitroquinoline (CAS 159454-73-6)
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Recommended Standards
- 5-Hydroxy-1-phenyl-1H-pyrazole-4-carboxylic acid (CAS 70453-98-4)
- 5-Methoxy-8-nitroquinoline (CAS 36020-53-8)
- 5-Fluoro-2-(methylthio)-6-oxo-1,6-dihydropyrimidine-4-carboxylic acid (CAS 654-92-2)
- 5-Methyl-2-(2-nitrophenyl)oxazole (CAS 52829-70-6)
- 1-Benzyl-N-ethylpiperidin-4-amine (CAS 50534-24-2)
- 2-Fluoropropane-1,3-diamine (CAS 159029-28-4)
- 3,6-Dibromothieno[3,2-b]thiophene (CAS 392662-65-6)
- 5-(6-Chloropyridin-3-yl)-3-(2-methoxyethyl)-1,2,4-oxadiazole (CAS 1239723-21-7)
- 8-Methylquinoline-2,4(1H,3H)-dione (CAS 1188436-93-2)
- 1-(6,7-Dimethoxy-3,4-dihydroisoquinolin-2(1H)-yl)propane-1,2-dione (CAS 67522-27-4)
- H-Pro-Gln-Phe-Tyr-OH (CAS 787539-66-6)
- 2,2-Dimethyl-6-trifluoromethyl-1,3-dioxin-4-one (CAS 164021-30-1)
- Amiodarone EP Impurity G (CAS 1087223-70-8)
- Semaglutide impurity 91 (CAS CATO-C4X-222691)
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