2-(Difluoromethyl)-4-methyl-3-nitropyridine-5-sulfonyl chloride CAS 1807033-83-5
| CAS No. | 1807033-83-5 |
| Molecular Formula | C7H5ClF2N2O4S |
| Molecular Weight | 286.64 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
2-(Difluoromethyl)-4-methyl-3-nitropyridine-5-sulfonyl chloride (CAS 1807033-83-5), molecular formula C7H5ClF2N2O4S and molecular weight 286.64 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, 2-(Difluoromethyl)-4-methyl-3-nitropyridine-5-sulfonyl chloride (C7H5ClF2N2O4S) contains an amide group, a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, fluorine/chlorine substitution, an aromatic ring system. 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 286.64 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.
As a certified reference material (CRM), 2-(Difluoromethyl)-4-methyl-3-nitropyridine-5-sulfonyl chloride 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 | C7H5ClF2N2O4S |
| Molecular Weight | 286.64 g/mol |
| 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 methanol, ethanol, DMSO, water |
| 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 |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1995 |
| Halogen Content | F/Cl-containing |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |
Related Difluoromethyl Standards
- 4-(Difluoromethyl)-6-methyl-5-nitropyridine-3-sulfonyl chloride (CAS 1805070-13-6)
- 2-(Difluoromethyl)-3-methyl-5-nitropyridine-4-sulfonyl chloride (CAS 1805435-73-7)
- 2-(Difluoromethyl)-6-methyl-3-nitropyridine-5-sulfonyl chloride (CAS 1805608-39-2)
- 2-(Difluoromethyl)-3-methyl-4-nitropyridine-5-sulfonyl chloride (CAS 1806041-77-9)
- 2-(Difluoromethyl)-5-methyl-3-nitropyridine-6-sulfonyl chloride (CAS 1806041-86-0)
- 2-(Difluoromethyl)-6-methyl-3-nitropyridine-4-sulfonyl chloride (CAS 1806864-18-5)
- 2-(Difluoromethyl)-3-methyl-4-nitropyridine-6-sulfonyl chloride (CAS 1806966-16-4)
- 4-(Difluoromethyl)-5-methyl-3-nitropyridine-2-sulfonyl chloride (CAS 1807037-04-2)
Recommended Standards
- (3-Chloro-5-(trifluoromethyl)pyridin-2-yl)(pyridin-2-yl)methanone (CAS 339011-89-1)
- (3-Chloro-5-(trifluoromethyl)pyridin-2-yl)(pyridin-3-yl)methanone (CAS 338953-55-2)
- 4-Chloro-6-methoxy-2-(trifluoromethyl)quinoline-3-carbonitrile (CAS 959271-96-6)
- 8-Chloro-3-(1H-pyrrol-1-yl)-6-(trifluoromethyl)-[1,2,4]triazolo[4,3-a]pyridine (CAS 338773-77-6)
- (1S,4S)-2,5-Diazabicyclo[2.2.2]octane (CAS 194600-16-3)
- N-(5-chloro-2-(prop-2-yn-1-yloxy)benzyl)cyclohexanamine (CAS 1239720-53-6)
- 5-Phenyl-3-(trifluoromethyl)-2-pyridinecarboxylic acid (CAS 1211578-17-4)
- Tigecycline Impurity N1 (CAS 1633815-62-9)
- 1-(4-Methyl-1H-pyrazol-3-yl)butan-1-one (CAS 68809-56-3)
- 3-(4-Ethoxy-phenylamino)-propionitrile (CAS 23609-20-3)
- 1-(phenylsulfonyl)piperidine-3-carbohydraZide (CAS 494825-75-1)
- N-(3,4-Difluorophenyl)-2-((4-(4-ethoxyphenyl)-5-(pyridin-3-yl)-4H-1,2,4-triazol-3-yl)thio)acetamide (CAS 477330-08-8)
- (2R,3R)-1-ethyl-2-(4-methoxyphenyl)-6-oxopiperidine-3-carboxylic acid (CAS 1212189-30-4)
- Insulin Degludec Impurity 11 (CAS CATO-C4X-215711)
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