5-Bromo-1H-pyrrolo[2,3-b]pyridine-3-sulfonamide CAS 1936017-68-3
| CAS No. | 1936017-68-3 |
| Molecular Formula | C7H6BrN3O2S |
| Molecular Weight | 276.11 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
5-Bromo-1H-pyrrolo[2,3-b]pyridine-3-sulfonamide (CAS 1936017-68-3), molecular formula C7H6BrN3O2S and molecular weight 276.11 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to an amide group, a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, bromine substitution, an aromatic ring system, 5-Bromo-1H-pyrrolo[2,3-b]pyridine-3-sulfonamide is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 276.11 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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 | C7H6BrN3O2S |
| Molecular Weight | 276.11 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 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) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1996 |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 1 |
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- 4,4'-(1E,1'E)-2,2'-(1-phenyl-1H-pyrazole-3,5-diyl)bis(ethene-2,1-diyl)bis(2-methoxyphenol) (CAS 1019110-87-2)
- 1H-Pyrrolo[2,3-b]pyridine-2-carboxaldehyde, 1-(phenylsulfonyl)-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)- (CAS 942920-60-7)
- 5-Bromo-2,4-difluoro-3-methylaniline (CAS 112822-79-4)
- 1-(3,4-dichlorobenzoyl)pyrrolidine-2-carboxylic acid (CAS 62559-51-7)
- 5-(Methylthio)pyridin-3-amine (CAS 232951-86-9)
- Semaglutide impurity 208 (CAS CATO-C4X-2226208)
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