2,4-Dichloropyridine-3-sulfonyl chloride CAS 733047-84-2
| CAS No. | 733047-84-2 |
| Molecular Formula | C5H2Cl3NO2S |
| Molecular Weight | 246.50 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Structurally, 2,4-Dichloropyridine-3-sulfonyl chloride (C5H2Cl3NO2S) contains an amide group, a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution. 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 246.50 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.
CATO supplies 2,4-Dichloropyridine-3-sulfonyl chloride (CAS 733047-84-2), a certified reference material (molecular formula C5H2Cl3NO2S, MW 246.50 g/mol) for analytical method development and quality control.
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 | C5H2Cl3NO2S |
| Molecular Weight | 246.50 g/mol |
| 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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1986 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related Dichloropyridine Standards
- 2,6-Dichloropyridine-4-sulfonyl chloride (CAS 1058741-91-5)
- 2,5-Dichloropyridine-3-sulfonyl chloride (CAS 1208081-36-0)
- 4,5-Dichloropyridine-3-sulfonyl chloride (CAS 1352498-23-7)
- 4,6-Dichloropyridine-2-sulfonyl chloride (CAS 1393558-17-2)
- 4,6-Dichloropyridine-3-sulfonyl chloride (CAS 1402666-75-4)
- 4,5-Dichloropyridine-2-sulfonyl chloride (CAS 1803826-16-5)
- 4-[(2,6-Dichloropyridine-3-yl)methyl]mopholine (CAS 1428234-56-3)
- 2,6-dichloropyridine-3-sulfonyl chloride (CAS 239810-43-6)
Recommended Standards
- 1,4-Bis(vinyldimethylsilyl)benzene (CAS 4519-17-9)
- Methanesulfonic acid, hydroxy-, magnesium complex (CAS 83529-10-6)
- 2-Chloro-3,4,4,4-tetrafluoro-3-(trifluoromethoxy)but-1-ene (CAS 261503-71-3)
- 4,5,8-Trichloro-2-methylquinoline (CAS 1203-36-7)
- 4-Fluoro-N-(4-methylpentan-2-yl)aniline (CAS 136684-93-0)
- 4-Ethoxy-4-P-tolyl-butyronitrile (CAS 83898-14-0)
- 3-Bromo-5-isoxazoleacetic acid (CAS 4992-20-5)
- 1-(Adamantan-1-yl)-N-(benzo[d][1,3]dioxol-5-ylmethyl)ethan-1-amine (CAS 312519-09-8)
- 4-(Naphthalen-1-yl)-3-phenyl-1H-1,2,4-triazole-5(4H)-thione (CAS 96134-05-3)
- 7-Methoxy-5-methylbenzofuran-3-carboxylic acid (CAS 1485985-19-0)
- (4-Amino-3-(trifluoromethyl)phenyl)dimethylphosphine oxide (CAS 2903925-23-3)
- N-(4-(4-Methoxyphenyl)-5-methylthiazol-2-yl)isoxazole-5-carboxamide (CAS 919751-64-7)
- 5-[2-(2-Naphthyloxy)phenyl]-2H-tetrazole (CAS 1305320-61-9)
- Insulin Degludec Impurity 2 (CAS CATO-C4X-21572)
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