2,3-Dichlorobenzofuran CAS 69314-26-7
| CAS No. | 69314-26-7 |
| Molecular Formula | C8H4Cl2O |
| Molecular Weight | 187.02 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 2,3-Dichlorobenzofuran.
2,3-Dichlorobenzofuran (CAS 69314-26-7), molecular formula C8H4Cl2O and molecular weight 187.02 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, 2,3-Dichlorobenzofuran (C8H4Cl2O) contains a hydroxyl group, an ether linkage, chlorine substitution, an aromatic ring system. The molecule exhibits a degree of unsaturation (DBE) of 6.0, corresponding to approximately 6 ring(s) or double-bond equivalent(s). With a molecular weight of 187.02 g/mol, it falls into the medium-molecular-weight range. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
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 | C8H4Cl2O |
| Molecular Weight | 187.02 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1976 |
| Halogen Content | Cl-containing |
Related Dichlorobenzofuran Standards
- 4,6-Dichlorobenzofuran (CAS 175203-95-9)
- 5,7-Dichlorobenzofuran-3(2H)-one (CAS 74815-20-6)
- 5,6-dichlorobenzofuran-3-one (CAS 1337842-14-4)
- 4,7-Dichlorobenzofuran-2-carbaldehyde (CAS 145672-66-8)
- 5,7-Dichlorobenzofuran-2-carbaldehyde (CAS 23145-15-5)
- 4,7-Dichlorobenzofuran-3-carboxylic acid (CAS 1489438-50-7)
- 5,7-Dichlorobenzofuran-2-carboxylic acid (CAS 50635-20-6)
- 2-(2,5-Dichlorobenzofuran-3-yl)acetic acid (CAS 1420791-49-6)
Recommended Standards
- Bis(1-chloroethyl) Carbonate (CAS 50594-97-3)
- 2,6-Dichloro-4-ethynylphenol (CAS 1569438-49-8)
- Bis(2-chloroethyl) carbonate (CAS 623-97-2)
- (2-(2-Hydroxypropan-2-yl)thiazol-4-yl)boronic acid (CAS 1411637-29-0)
- 2-(4-Chloro-3-hydroxyphenyl)acetic acid (CAS 60397-70-8)
- 2-(Carboxy(hydroxy)methyl)-7-(chloromethyl)benzo[d]oxazole (CAS 1804210-21-6)
- S-((Tetrahydro-2H-pyran-3-yl)methyl) ethanethioate (CAS 1935893-64-3)
- (3-Chloro-4-nitrophenyl)(phenyl)methanone (CAS 7501-56-6)
- N-(3-chloro-4-methylphenyl)thiazolidine-4-carboxamide hydrochloride (CAS 1606079-59-7)
- 2-chloro-1,6-naphthyridine-3-carbonitrile (CAS 50345-85-2)
- N-cyclopropyltetrahydro-2H-thiopyran-3-amine (CAS 1343588-09-9)
- 3-(3-Nitrophenyl)-N'-(thiophen-2-ylmethylene)-1H-pyrazole-5-carbohydrazide (CAS 303106-87-8)
- 5-Hydroxy-2-(hydroxymethyl)pyridin-4(1H)-one (CAS 31883-16-6)
- Tirzepatide Impurity 16 (CAS CATO-C4X-324016)
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