1-(Benzenesulfonyl)-5-bromo-3-iodo-1H-pyrrolo[2,3-b]pyridine CAS 757978-19-1
| CAS No. | 757978-19-1 |
| Molecular Formula | C13H8BrIN2O2S |
| Molecular Weight | 463.09 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
1-(Benzenesulfonyl)-5-bromo-3-iodo-1H-pyrrolo[2,3-b]pyridine (CAS 757978-19-1), molecular formula C13H8BrIN2O2S and molecular weight 463.09 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage, bromine/iodine substitution, 1-(Benzenesulfonyl)-5-bromo-3-iodo-1H-pyrrolo[2,3-b]pyridine is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 463.09 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).
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 | C13H8BrIN2O2S |
| Molecular Weight | 463.09 g/mol |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°C), protect from light, keep sealed and dry |
| 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) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1986 |
| Halogen Content | Br/I-containing |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |
Related Benzenesulfonyl Standards
- 4-(Benzenesulfonyl)-5-(4-chlorophenyl)-1-(2,4-dichlorophenyl)-1H-pyrazole (CAS 318951-64-3)
- 4-(Benzenesulfonyl)-5-(4-chlorophenyl)-1-(3,4-dichlorophenyl)-1H-pyrazole (CAS 318951-67-6)
- 3-[1-(Benzenesulfonyl)-4H-pyridin-4-yl]-6-(tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-indole (CAS 2377610-27-8)
- 3-(Benzenesulfonyl)-7-chloro-N-(4-ethylphenyl)-[1,2,3]triazolo[1,5-a]quinazolin-5-amine (CAS 904578-68-3)
- 582305-43-9 1-(Benzenesulfonyl)-5-bromo-3-iodo-1H-indole DTXSID60651259 (CAS 582305-43-9)
- N-(Benzenesulfonyl)-N-(3-cyano-5-phenylfuran-2-yl)benzenesulfonamide (CAS 478045-63-5)
- 5-(Benzenesulfonyl)-4-[(4-tert-butylphenyl)sulfanyl]-2-phenylpyrimidine (CAS 478080-95-4)
- 3-(Benzenesulfonyl)-N-(2,3-dihydro-1,4-benzodioxin-6-yl)-[1,2,3]triazolo[1,5-a]quinazolin-5-amine (CAS 904575-98-0)
Recommended Standards
- 1-((4-Bromophenyl)sulfonyl)-3-iodo-1H-pyrrolo[2,3-c]pyridine (CAS 1638772-30-1)
- 4-Bromo-2-iodo-1-(phenylsulfonyl)pyrrolo[2,3-b]pyridine (CAS 889939-26-8)
- 6-Bromo-2-iodo-1-(phenylsulfonyl)-1H-pyrrolo[3,2-c]pyridine (CAS 1638764-69-8)
- 4-bromo-3-iodo-1-(phenylsulfonyl)-1H-pyrrolo[2,3-b]pyridine (CAS 943322-47-2)
- 5-(Chloromethyl)-2-fluoropyridine (CAS 315180-15-5)
- (5E)-5-[(2-Hydroxy-1-naphthyl)methylene]-2-mercapto-1,3-thiazol-4(5H)-one (CAS 268736-98-7)
- 2-Chloro-1-(3,4-difluorophenyl)-2,2-difluoroethan-1-one (CAS 1352215-14-5)
- 7-Benzyl-4-chloro-5,6,7,8-tetrahydropyrido[3,4-d]pyrimidin-2-amine (CAS 859825-79-9)
- Pyridine-2,6-d2 (CAS 17265-96-2)
- Ethyl 3-chloro-5-formylbenzoate (CAS 1823945-12-5)
- (5-Phenyloxazol-2-yl)methanamine (CAS 112206-31-2)
- 2-(Furan-3-yl)-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)thiazole (CAS 1416263-21-2)
- 2-(Aminomethyl)-4-(difluoromethyl)-6-methoxy-3-methylpyridine (CAS 1804868-51-6)
- Tirzepatide Impurity 13 (CAS CATO-C4X-324013)
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