4-Bromoisoquinoline-5-sulfonyl chloride hydrochloride CAS 1203176-80-0
| CAS No. | 1203176-80-0 |
| Molecular Formula | C9H5BrClNO2S |
| Molecular Weight | N/A |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Based on its molecular formula C9H5BrClNO2SHCl, 4-Bromoisoquinoline-5-sulfonyl chloride hydrochloride contains a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage, chlorine/bromine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 343.02 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
CATO supplies 4-Bromoisoquinoline-5-sulfonyl chloride hydrochloride (CAS 1203176-80-0), a certified reference material (molecular formula C9H5BrClNO2SHCl, MW 343.02 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 | C9H5BrClNO2S HCl |
| Molecular Weight | 343.02 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| 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) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1990 |
| Halogen Content | Cl/Br-containing |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related Bromoisoquinoline Standards
- 4-Bromoisoquinoline-1-carbaldehyde (CAS 1008361-78-1)
- Ethyl 6-Bromoisoquinoline-1-carboxylate (CAS 1020576-70-8)
- 7-Bromoisoquinoline-1,3(2H,4H)-dione (CAS 1033330-27-6)
- Ethyl 1-bromoisoquinoline-3-carboxylate (CAS 1079947-40-2)
- 6-Bromoisoquinoline-1-carbonitrile (CAS 1082674-24-5)
- 8-Bromoisoquinoline-1-carbonitrile (CAS 1082734-33-5)
- 4-Bromoisoquinoline-1-carboxamide (CAS 1089328-67-5)
- Ethyl 5-Bromoisoquinoline-1-carboxylate (CAS 1111311-65-9)
Recommended Standards
- N-(3-Chlorophenyl)-2-((3-(pyridin-3-yl)-1H-1,2,4-triazol-5-yl)thio)acetamide (CAS 332157-99-0)
- 1-Isopropylazetidin-3-amine Dihydrochloride (CAS 117546-56-2)
- Ethyl 3-(5-chloro-2-methoxyphenyl)-5-methylisoxazole-4-carboxylate (CAS 495417-29-3)
- 2,3-dimethyl-4-(trifluoromethyl)-2H-pyrazolo[3,4-b]pyridin-6-ol (CAS 1018163-60-4)
- 3-methylbut-2-en-1-yl 2-{[(tert-butoxy)carbonyl]amino}acetate (CAS 82706-45-4)
- 4-Chloro-5-methylbenzo[c][1,2,5]oxadiazole (CAS 55730-16-0)
- 1,1,1,3,3,3-Hexafluoro-2-(3-fluoro-4-iodophenyl)propan-2-ol (CAS 1358953-45-3)
- Clarithromycin EP Impurity K HCl (CAS 127157-35-1（free base）)
- 3-(Cyclopropylmethoxy)-5-methoxybenzoic acid (CAS 1369862-57-6)
- Semaglutide impurity 290 (CAS CATO-C4X-2226290)
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