2,4-Dichloro-3-nitropyridine CAS 5975-12-2
| CAS No. | 5975-12-2 |
| Molecular Formula | C5H2Cl2N2O2 |
| Molecular Weight | 192.99 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 2,4-Dichloro-3-nitropyridine.
2,4-Dichloro-3-nitropyridine (CAS 5975-12-2), molecular formula C5H2Cl2N2O2 and molecular weight 192.99 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, 2,4-Dichloro-3-nitropyridine (C5H2Cl2N2O2) contains an amide group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 5.0, corresponding to approximately 5 ring(s) or double-bond equivalent(s). With a molecular weight of 192.99 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.
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 | C5H2Cl2N2O2 |
| Molecular Weight | 192.99 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 sealed and dry, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1958 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
Related Dichloro Standards
- 2,3-Dichloro-4-nitropyridine (CAS 1360438-45-4)
- 2,4-Dichloro-6-nitropyridine (CAS 1379337-73-1)
- 2,5-Dichloro-4-nitropyridine (CAS 1400701-63-4)
- 3,6-Dichloro-2-nitropyridine (CAS 1422434-67-0)
- 4,5-Dichloro-2-nitropyridine (CAS 1803781-87-4)
- 2,3-Dichloro-6-nitropyridine (CAS 1807182-32-6)
- 2,3-Dichloro-5-nitropyridine (CAS 22353-40-8)
- 2,4-Dichloro-5-nitropyridine (CAS 4487-56-3)
Recommended Standards
- 1H-Pyrazole-3,5-dicarbonyl chloride (CAS 74621-40-2)
- 2,4-Dichloro-5-pyrimidinecarboxylic acid (CAS 37131-89-8)
- 1H-Imidazole-4,5-dicarbonyl dichloride (CAS 59399-36-9)
- 2,5-Dichloro-3-nitropyridine (CAS 21427-62-3)
- 3-((2-Hydroxyphenyl)thio)-1-methylpyrrolidin-2-one (CAS 1343927-61-6)
- 4-(4-Methoxyphenyl)thiophene-2-carboxylic acid (CAS 82437-74-9)
- 5-((4-Methoxyphenyl)thio)-2-(methylthio)pyrimidine-4-carboxylic acid (CAS 25818-48-8)
- 2-(2-Chloro-4-cyano-6-(difluoromethyl)pyridin-3-yl)acetic acid (CAS 1805260-93-8)
- 8-Bromooctanoic acid (CAS 17696-11-6)
- 3-(4-Hydroxyphenyl)isonicotinic acid (CAS 1258625-94-3)
- Erythromycin Thiocyanate (CAS 7704-67-8)
- Roflumilast Impurity 4 (CAS 162401-30-1)
- 7-Methylbenzo[d]thiazole-2-thiol, 97% (CAS 54237-36-4)
- Insulin Glargine (CAS 160337-95-1)
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