2-chloropyridine-4-sulfonyl fluoride CAS 1909348-26-0
| CAS No. | 1909348-26-0 |
| Molecular Formula | C5H3ClFNO2S |
| Molecular Weight | 195.60 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Owing to an amide group, a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, fluorine/chlorine substitution, 2-chloropyridine-4-sulfonyl fluoride is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 195.60 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
2-chloropyridine-4-sulfonyl fluoride (CAS 1909348-26-0), molecular formula C5H3ClFNO2S and molecular weight 195.60 g/mol, is a CATO reference standard with documented purity and traceability.
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 | C5H3ClFNO2S |
| Molecular Weight | 195.60 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.) | 1995 |
| Halogen Content | F/Cl-containing |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related chloropyridine Standards
- 2-Chloropyridine-4-sulfonic acid (CAS 1209458-81-0)
- 6-Chloropyridine-2-sulfonic acid (CAS 133145-15-0)
- 6-Chloropyridine-3-sulfonic acid (CAS 17624-08-7)
- 2-Chloropyridine-3-sulfonic acid (CAS 6602-56-8)
- 4-Chloropyridine-3-sulfonic acid (CAS 51498-38-5)
- 1,1'-(4-Chloropyridine-2,6-diyl)diethanone (CAS 195967-10-3)
- 5-Chloropyridine-3-sulfonamide (CAS 1334148-60-5)
- 6-chloropyridine-2-sulfonamide (CAS 1823272-65-6)
Recommended Standards
- 8-Chloro-4-hydroxyquinolin-2(1H)-one (CAS 1900-41-0)
- (2-Chloro-4-formylphenoxy)acetonitrile (CAS 443289-82-5)
- 3-Acetyl-5-chloro-2-hydroxybenzonitrile (CAS 187273-03-6)
- 1-(7-Chlorofuro[3,2-b]pyridin-5-yl)ethan-1-one (CAS 2769929-85-1)
- 2-(Difluoromethyl)-5-nitrophenol (CAS 1261442-16-3)
- 2,3,7,8,12,13,17,18-Octaethylporphyrin (CAS 2683-82-1)
- 4-Chloro-3-cyclopropoxy-N-methylpicolinamide (CAS 1243463-11-7)
- 1,4,8-Triazacycloundecane (CAS 36532-31-7)
- 4-Fluoro-8-(trifluoromethyl)quinoline (CAS 1473422-60-4)
- (R)-2-((2S,3S)-3-((R)-1-((tert-Butyldimethylsilyl)oxy)ethyl)-4-oxoazetidin-2-yl)propanoicacid (CAS 93711-85-4)
- Methyl 4-(bromomethyl)benzenesulfonate (CAS 89980-97-2)
- 2-((tert-Butoxycarbonyl)(4-chlorobenzyl)amino)acetic acid (CAS 1182070-86-5)
- 4-Bromostilbene (CAS 4714-24-3)
- Semaglutide impurity 43 (CAS CATO-C4X-222643)
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