7-Methoxybenzofuran-2(3H)-one CAS 28033-41-2
| CAS No. | 28033-41-2 |
| Molecular Formula | C9H8O3 |
| Molecular Weight | 164.16 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 164.16 g/mol gives 7-Methoxybenzofuran-2(3H)-one distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
7-Methoxybenzofuran-2(3H)-one (CAS 28033-41-2) is a high-purity analytical reference standard with the molecular formula C9H8O3 and a molecular weight of 164.16 g/mol.
The molecular framework of 7-Methoxybenzofuran-2(3H)-one (C9H8O3) is characterized by a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system. In reversed-phase chromatography, its retention is governed primarily by the polarity and ionization state of its functional groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. 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.
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 | C9H8O3 |
| Molecular Weight | 164.16 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) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1965 |
Related Methoxybenzofuran Standards
- 6-Methoxybenzofuran-3(2H)-one (CAS 15832-09-4)
- 5-Methoxybenzofuran-7-ol (CAS 1780931-39-6)
- 3-Methoxybenzofuran-5-ol (CAS 384339-97-3)
- 4-Methoxybenzofuran-2(3H)-one (CAS 914645-37-7)
- 4-Methoxybenzofuran-2-ol (CAS 720696-54-8)
- 4-Methoxybenzofuran-3(2H)-one (CAS 7169-35-9)
- 4-Methoxybenzofuran-6-ol (CAS 858792-95-7)
- 5-Methoxybenzofuran-3(2H)-one (CAS 39581-55-0)
Recommended Standards
- 7-Methoxybenzo[d]isoxazol-3-amine (CAS 89976-74-9)
- 7-Methoxybenzofuran-4-ol (CAS 80673-27-4)
- 7-Methoxy-3-methyl-1H-pyrazolo[4,3-d]pyrimidine (CAS 91225-95-5)
- 7-Methoxyisobenzofuran-1(3H)-one (CAS 28281-58-5)
- 6-Bromo-5-(2-fluoro-4-nitrophenoxy)-1-methyl-1H-indazole (CAS 1206800-24-9)
- Ethyl (2R-trans)-3-(hydroxymethyl)oxirane-2-carboxylate (CAS 117069-18-8)
- 2-Methyl-1-azabicyclo[4.2.0]octane (CAS 101251-89-2)
- 2-Benzyl-3-oxopentanenitrile (CAS 883853-59-6)
- 3-(Piperidine-1-sulfonyl)-1,2-dihydropyridin-2-one (CAS 1552162-39-6)
- 6,7,8-trimethoxy-2,3,4,5-tetrahydro-1H-3-benzazepine (CAS 37015-26-2)
- Ethyl (1h-indole-2-carbonyl)glycinate (CAS 69808-66-8)
- 4-((9-((2R,4S,5R)-4-Hydroxy-5-(hydroxymethyl)tetrahydrofuran-2-yl)-9H-purin-6-yl)amino)naphthalene-1,2-dione (CAS 671782-38-0)
- Pcb No. 174 (CAS 38411-25-5)
- Semaglutide impurity 58 (CAS CATO-C4X-222658)
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