4-Bromoisothiazole-3-carbaldehyde CAS 88982-79-0
| CAS No. | 88982-79-0 |
| Molecular Formula | C4H2BrNOS |
| Molecular Weight | 192.03 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
CATO supplies 4-Bromoisothiazole-3-carbaldehyde (CAS 88982-79-0), a certified reference material (molecular formula C4H2BrNOS, MW 192.03 g/mol) for analytical method development and quality control.
Owing to an amide group, sulfur-containing functionality, a hydroxyl group, an ether linkage, bromine substitution, 4-Bromoisothiazole-3-carbaldehyde is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 192.03 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.
As a certified reference material (CRM), 4-Bromoisothiazole-3-carbaldehyde 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 | C4H2BrNOS |
| Molecular Weight | 192.03 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 |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1982 |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related Bromoisothiazole Standards
- 4-Bromoisothiazole-5-carbaldehyde (CAS 5242-62-6)
- 3-Bromoisothiazole-4-carbonitrile (CAS 1268247-73-9)
- 4-Bromoisothiazole-3-carbonitrile (CAS 89089-06-5)
- 5-Bromoisothiazole-4-carboxylic acid (CAS 1651166-54-9)
- 4-Bromoisothiazole-3-carboxylic Acid (CAS 4576-88-9)
- 4-Bromoisothiazole-5-carboxylic acid (CAS 88982-81-4)
- 5-Bromoisothiazole-3-carboxylic acid (CAS 4576-89-0)
- 3-Bromoisothiazole (CAS 55512-82-8)
Recommended Standards
- 2-Bromo-4-formylthiazole (CAS 5198-80-1)
- 4-Bromothiazole-2-carboxaldehyde (CAS 167366-05-4)
- 5-Bromothiazole-2-carbaldehyde, 97% (CAS 933752-44-4)
- 4-Bromothiazole-5-carbaldehyde (CAS 1244948-92-2)
- 5-Cyano-2-methylphenylboronic Acid (CAS 867333-43-5)
- Methyl 4-Formyl-1H-pyrrole-2-carboxylate (CAS 40611-79-8)
- 2,5-dihydroxy-3,4,6-trimethylbenzaldehyde (CAS 53711-21-0)
- Acetic acid ethenyl ester, polymer with ethene, 2-propenamide and 2-propen-1-yl N-(hydroxymethyl)carbamate (CAS 40838-77-5)
- Ethyl 5-bromo-2-(methylthio)pyrimidine-4-carboxylate (CAS 74840-38-3)
- 3-(Hydroxymethyl)-2-methoxyphenol (CAS 84864-62-0)
- 2,5-Dichloro-N-(piperidin-3-yl)benzamide hydrochloride (CAS 1835826-57-7)
- 2-(Cyclopentylmethoxy)-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridine (CAS 1346708-01-7)
- Tert-butyl (1-(2-methoxybenzoyl)piperidin-4-yl)carbamate (CAS 1286274-52-9)
- Semaglutide impurity 103 (CAS 1446013-07-5)
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