3-Bromobenzo[c]isothiazole-5-carboxylic acid CAS 1782620-63-6
| CAS No. | 1782620-63-6 |
| Molecular Formula | C8H4BrNO2S |
| Molecular Weight | 258.09 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 258.09 g/mol gives 3-Bromobenzo[c]isothiazole-5-carboxylic acid distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
CATO supplies 3-Bromobenzo[c]isothiazole-5-carboxylic acid (CAS 1782620-63-6), a certified reference material (molecular formula C8H4BrNO2S, MW 258.09 g/mol) for analytical method development and quality control.
Based on its molecular formula C8H4BrNO2S, 3-Bromobenzo[c]isothiazole-5-carboxylic acid contains a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage, bromine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 258.09 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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.
As a certified reference material (CRM), 3-Bromobenzo[c]isothiazole-5-carboxylic acid meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C8H4BrNO2S |
| Molecular Weight | 258.09 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) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1994 |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related Bromobenzo Standards
- 4-Bromobenzo[d]thiazole-2-carboxylic acid (CAS 1187928-21-7)
- 6-Bromobenzo[d]thiazole-2-carboxylic acid (CAS 1187928-32-0)
- 7-Bromobenzo[d]isothiazole-3-carboxylic acid (CAS 1206606-42-9)
- 2-Bromobenzo[d]thiazole-7-carboxylic acid (CAS 1378944-02-5)
- 2-Bromobenzo[d]thiazole-4-carboxylic acid (CAS 1440526-47-5)
- 6-Bromobenzo[d]thiazole-4-carboxylic acid (CAS 1784111-07-4)
- 2-Bromobenzo[d]thiazole-5-carboxylic Acid (CAS 933750-20-0)
- 5-Bromobenzo[d]isothiazole-3-carboxylic acid (CAS 677304-78-8)
Recommended Standards
- 7-Bromothieno[3,2-b]pyridine-2-carboxylic acid (CAS 1781484-71-6)
- 3-Bromo-2-nitro-1-benzothiophene (CAS 17402-78-7)
- 2,2,3,3-Tetrafluoropropyl (2,2,2-trifluoroethyl) carbonate (CAS 1791423-48-7)
- 7-Bromo-4-oxo-4,5-dihydrothieno[3,2-c]pyridine-2-carbaldehyde (CAS 1610520-28-9)
- S-(2-Pyridin-4-ylethyl)cysteine (CAS 28809-04-3)
- Pyrrolidin-2-ylmethanol hydrochloride (CAS 41325-79-5)
- 4-(Piperidin-4-yloxy)quinazoline (CAS 853687-25-9)
- Tofacitinib Impurity 85 (CAS CATO-C4X-107985)
- 3-((4-(Difluoromethyl)-2,2-difluoro-3-hydroxy-1,1-dioxido-2,3-dihydrobenzo[b]thiophen-5-yl)oxy)-5-fluorobenzonitrile (CAS 1799948-32-5)
- 2-(2-Aminoethyl)-6-hydroxyisonicotinonitrile (CAS 1393551-14-8)
- N-(1-(1H-benzo[d]imidazol-2-yl)-2-phenylethyl)-3,4-dichlorobenzamide (CAS 338410-59-6)
- 2-Amino-4H-chromeno[4,3-d]pyrimidin-4-one (CAS 68723-79-5)
- Methyl 7-chlorofuro[2,3-c]pyridine-5-carboxylate (CAS 1824605-51-7)
- Semaglutide impurity 63 (CAS CATO-C4X-222663)
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