2,3-Dichloro-5,6-difluorobenzaldehyde CAS 1263376-35-7
| CAS No. | 1263376-35-7 |
| Molecular Formula | C7H2Cl2F2O |
| Molecular Weight | 210.99 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 210.99 g/mol gives 2,3-Dichloro-5,6-difluorobenzaldehyde distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
2,3-Dichloro-5,6-difluorobenzaldehyde (CAS 1263376-35-7) is a high-purity analytical reference standard with the molecular formula C7H2Cl2F2O and a molecular weight of 210.99 g/mol.
2,3-Dichloro-5,6-difluorobenzaldehyde (C7H2Cl2F2O) contains a hydroxyl group, an ether linkage, fluorine/chlorine substitution, an aromatic ring system. Halogen substitution raises its density and boiling point; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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 | C7H2Cl2F2O |
| Molecular Weight | 210.99 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | 97%+ |
| Storage | Store at room temperature, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1990 |
| Halogen Content | F/Cl-containing |
Related Dichloro Standards
- 2,5-Dichloro-3,6-difluorobenzaldehyde (CAS 1263376-60-8)
- 2,6-Dichloro-5-fluoropyrimidine-4-carboxylic acid (CAS 2168766-03-6)
- Methyl dichloro-2,2-3-trifluoropropionate (CAS 13291-19-5)
- 3,4-Dichloro-5-(2-fluoroethoxy)pyridazine (CAS 1346698-28-9)
- 1,2-Dichloro-4-(1,1-difluoroethyl)benzene (CAS 1204295-72-6)
- 2,4-Dichloro-1-(1,1-difluoroethyl)benzene (CAS 1204295-92-0)
- 1,4-Dichloro-2-(1,1-difluoroethyl)benzene (CAS 1204295-96-4)
- 3,5-Dichloro-2-methylbenzodifluoride (CAS 1803805-33-5)
Recommended Standards
- 4-Chloro-3,5-difluorobenzoyl chloride (CAS 1261799-38-5)
- 5-Chloro-2,4-difluorobenzoyl chloride (CAS 1261734-09-1)
- 132794-08-2 4-Chloro-2,5-difluorobenzoyl chloride 4-chloro-2,5-difluorobenzoyl chloride 97% 4-chloro-2,5-difluorobenzoylchloride97% benzoyl chloride, 4-chloro-2,5-difluoro- (9ci) (CAS 132794-08-2)
- 2-Chloro-4,5-difluorobenzoyl chloride (CAS 121872-95-5)
- 1170996-57-2 4-(4-Methylphenyl)-6-piperazin-1-ylpyrimidine MFCD14281640 (CAS 1170996-57-2)
- 4-(4-Fluorophenyl)-1-methyl-3-(pyridin-2-yl)-1h-pyrazol-5-amine (CAS 1174306-33-2)
- 2-(Difluoromethoxy)-5-formylphenylpropanal (CAS 1805863-02-8)
- 3-Ethoxy-4-[(2-fluorobenzyl)oxy]benzoyl chloride (CAS 1160260-00-3)
- 3-(1,3-Thiazol-2-yl)phenylboronic acid (CAS 1316856-96-8)
- N-Hydroxy-1H-imidazo[4,5-b]pyridine-6-carboximidamide (CAS 952511-27-2)
- (R)-2-Amino-3-(3,4-diethylphenyl)propanoic acid (CAS 686297-84-7)
- Methyl 5-vinyl-1H-pyrrole-3-carboxylate (CAS 198703-18-3)
- 2-Hydroxy-4,5-dimethyl-1,3,2-dioxaphospholane 2-Oxide (CAS 50577-87-2)
- Semaglutide impurity 267 (CAS CATO-C4X-2226267)
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