2,5-Dichloro-3-(difluoromethyl)pyridine CAS 71701-93-4
| CAS No. | 71701-93-4 |
| Molecular Formula | C6H3Cl2F2N |
| Molecular Weight | 198.00 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Structurally, 2,5-Dichloro-3-(difluoromethyl)pyridine (C6H3Cl2F2N) contains a nitrile group, fluorine/chlorine substitution, an aromatic ring system. The molecule exhibits a degree of unsaturation (DBE) of 4.0, corresponding to approximately 4 ring(s) or double-bond equivalent(s). With a molecular weight of 198.00 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.
2,5-Dichloro-3-(difluoromethyl)pyridine (CAS 71701-93-4), molecular formula C6H3Cl2F2N and molecular weight 198.00 g/mol, is a CATO reference standard with documented purity and traceability.
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.
As a certified reference material (CRM), 2,5-Dichloro-3-(difluoromethyl)pyridine meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C6H3Cl2F2N |
| Molecular Weight | 198.00 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, faint amine-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 |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1977 |
| Halogen Content | F/Cl-containing |
| Nitrogen Atoms | 1 |
Related Dichloro Standards
- 2,6-Dichloro-4-(difluoromethyl)pyridine (CAS 1201675-01-5)
- 2,4-Dichloro-5-(difluoromethyl)pyridine (CAS 1256833-30-3)
- 2,3-Dichloro-4-(difluoromethyl)pyridine (CAS 1257071-85-4)
- 2,4-Dichloro-3,6-difluoroaniline (CAS 1314936-85-0)
- 3,5-Dichloro-2,6-difluoro-4-methylpyridine (CAS 1347815-16-0)
- 2,6-Dichloro-3-(difluoromethyl)pyridine (CAS 1374659-26-3)
- 2,5-Dichloro-4-(difluoromethyl)pyridine (CAS 1374659-30-9)
- 3,5-Dichloro-4-(difluoromethyl)pyridine (CAS 1374659-33-2)
Recommended Standards
- 2,4-Dichloro-3,5-difluoroaniline (CAS 50408-95-2)
- 2,6-Dichloro-3,5-difluoroaniline (CAS 700-15-2)
- 2,3-Dichloro-5-(difluoromethyl)pyridine (CAS 71690-06-7)
- 2-Chloro-5-(chlorodifluoromethyl)pyridine (CAS 71701-84-3)
- 2-Bromo-4-{[(1-ethyl-1h-pyrazol-4-yl)amino]methyl}-6-methoxyphenol hydrochloride (CAS 1210340-78-5)
- 4'-(Methylsulfonyl)[1,1'-biphenyl]-4-carbonitrile (CAS 345222-97-1)
- 4-Bromo-2-chloro-D-phenylalanine (CAS 1213929-66-8)
- (2-Chloro-1-methyl-1H-indol-3-yl)methanamine methanesulfonate (CAS 1047620-83-6)
- N-(o-tolyl)quinoline-8-sulfonamide (CAS 158729-20-5)
- 4,6-Dichloropyridazine-3-carboxylic Acid (CAS 1040246-87-4)
- 1-Bromo-4-(chloromethyl)-2-(trifluoromethyl)benzene (CAS 1214339-27-1)
- 4-(2,3-Dihydro-1h-inden-5-yl)-1,3-thiazol-2-ylamine (CAS 59543-75-8)
- 2-Bromo-5-chloronicotinaldehyde (CAS 1227605-52-8)
- Acetyl Tetrapeptide- 15 (CAS 928007-64-1)
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