2-methyl-5-[(5-methylfuran-2-yl)carbonyl]furan CAS 21432-51-9
| CAS No. | 21432-51-9 |
| Molecular Formula | C11H10O3 |
| Molecular Weight | 190.20 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 2-methyl-5-[(5-methylfuran-2-yl)carbonyl]furan.
2-methyl-5-[(5-methylfuran-2-yl)carbonyl]furan (CAS 21432-51-9) is a high-purity analytical reference standard with the molecular formula C11H10O3 and a molecular weight of 190.20 g/mol.
Based on its molecular formula C11H10O3, 2-methyl-5-[(5-methylfuran-2-yl)carbonyl]furan contains a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 190.20 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
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 | 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.) | 1963 |
Related methyl Standards
- 1-Methyl-3-(5-methylfuran-2-yl)-1h-pyrazole-4-carbaldehyde (CAS 1152503-61-1)
- 5-(5-Methylfuran-2-yl)-1H-pyrrole-2-carboxylic acid (CAS 1547645-87-3)
- 3-(5-Methylfuran-2-yl)-1H-pyrazole-5-carboxamide (CAS 1346270-24-3)
- 4-Ethyl-3-(2-methylfuran-3-yl)-1h-pyrazol-5-amine (CAS 1187057-56-2)
- 4-Ethyl-3-(3-methylfuran-2-yl)-1h-pyrazol-5-amine (CAS 1310836-06-6)
- 4-Methyl-1-((5-methylfuran-2-yl)methyl)-1H-pyrazol-5-amine (CAS 957513-32-5)
- bis(5-methylfuran-2-yl)methanamine (CAS 933745-91-6)
- N-((5-methylfuran-2-yl)methyl)pyridin-2-amine (CAS 100060-05-7)
Recommended Standards
- 2-Methyl-4-(methylamino)isoindoline-1,3-dione (CAS 2762-19-8)
- 2-Methyl-7-aza-3-indolylacetic Acid (CAS 7546-50-1)
- 2-Methyl-3-methylene-2,3-dihydrobenzofuran-2-carboxylic acid (CAS 854898-21-8)
- 2-Methylbenzofuran-6-yl acetate (CAS 92810-82-7)
- 2-Acetyl-4-chlorophenyl 4-methylbenzoate (CAS 88952-03-8)
- Alpha-Arteether (CAS 82534-75-6)
- 5-({[(9h-fluoren-9-yl)methoxy]carbonyl}amino)pyridine-3-carboxylic acid (CAS 457100-77-5)
- 5-Methylpyrimidine-4-carboxylic Acid (CAS 933683-35-3)
- Isoscabertopin (CAS 439923-16-7)
- Codeinone Impurity 3 (CAS 1777-89-5)
- Ethyl acridin-9-ylcarbamate (CAS 26687-09-2)
- 2,4-Dichloro-5-fluorophenylboronic acid (CAS 1417914-09-0)
- Bis(11-bromoundecyl) 4,4'-(((1,2-diphenylethene-1,2-diyl)bis(4,1-phenylene))bis(ethyne-2,1-diyl))(Z)-dibenzoate (CAS 1642109-29-2)
- Semaglutide impurity 59 (CAS CATO-C4X-222659)
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