3,3-dimethyl-2,3-dihydro-1-benzofuran-7-carboxylic acid CAS 133609-87-7
| CAS No. | 133609-87-7 |
| Molecular Formula | C11H12O3 |
| Molecular Weight | 192.21 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 192.21 g/mol gives 3,3-dimethyl-2,3-dihydro-1-benzofuran-7-carboxylic acid distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
3,3-dimethyl-2,3-dihydro-1-benzofuran-7-carboxylic acid (CAS 133609-87-7) is a high-purity analytical reference standard with the molecular formula C11H12O3 and a molecular weight of 192.21 g/mol.
The molecular framework of 3,3-dimethyl-2,3-dihydro-1-benzofuran-7-carboxylic acid (C11H12O3) 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 its high hydrophobicity (logP), 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 | C11H12O3 |
| Molecular Weight | 192.21 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.) | 1995 |
Related dimethyl Standards
- 2,3-dimethyl-2,3-dihydro-1-benzofuran-7-carboxylic acid (CAS 103986-71-6)
- 2,3-Dimethyl-2,3-dihydrobenzofuran-5-carboxylic acid (CAS 103988-32-5)
- 1,1-Dimethyl-1,3-dihydroisobenzofuran-5-carboxylic acid (CAS 1093214-59-5)
- 2,2-Dimethyl-4H-benzo[d][1,3]dioxine-5-carbaldehyde (CAS 113731-26-3)
- 2,2-Dimethyl-2,3-dihydrobenzofuran-5-carboxylic Acid (CAS 123656-34-8)
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