4-Bromo-5-methylisatin CAS 147149-84-6
| CAS No. | 147149-84-6 |
| Molecular Formula | C9H6BrNO2 |
| Molecular Weight | 240.05 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including 4-Bromo-5-methylisatin.
4-Bromo-5-methylisatin (CAS 147149-84-6), molecular formula C9H6BrNO2 and molecular weight 240.05 g/mol, is a CATO reference standard with documented purity and traceability.
4-Bromo-5-methylisatin (C9H6BrNO2) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, bromine substitution. Halogen substitution raises its density and boiling point, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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).
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 manufactures 4-Bromo-5-methylisatin under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C9H6BrNO2 |
| Molecular Weight | 240.05 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, faint amine-like odor) |
| 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.) | 1999 |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 1 |
Related Bromo Standards
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- Methyl 2-bromo-5-cyanobenzoate (CAS 1031927-03-3)
- 5-Bromo-3-indolecarboxylic Acid (CAS 10406-06-1)
- 5-Bromo-4-methylindoline-2,3-dione (CAS 106976-22-1)
- 5-Bromo-6-methylindoline-2,3-dione (CAS 106976-23-2)
- 7-Bromo-5-methylisatin (CAS 108938-16-5)
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Recommended Standards
- 1-(5-Bromofuro[3,2-b]pyridin-6-yl)ethanone (CAS 1421517-91-0)
- 1-(5-Bromobenzo[d]oxazol-2-yl)ethanone (CAS 1482363-78-9)
- 5-Bromo-6-hydroxyquinolin-2(1H)-one (CAS 1420799-88-7)
- 1-(6-Bromobenzo[d]oxazol-2-yl)ethanone (CAS 1483869-18-6)
- tert-Butyl (2-amino-3-methylbutyl)carbamate (CAS 1117693-61-4)
- N,N'-Bis(4-nitrophenyl)methanediamine (CAS 39809-82-0)
- (6E)-8-Methyl-6-nonenoic Acid Methyl Ester (CAS 112375-54-9)
- Rifaximin EP Impurity D (CAS CATO-C4X-15054)
- 6-Amino-1-(3,4-dimethoxyphenethyl)-2-thioxo-2,3-dihydropyrimidin-4(1H)-one (CAS 838850-39-8)
- 4-(Ethylsulfonyl)-N-isopropylaniline (CAS 1155001-78-7)
- 3-(2-(4-(4-Fluorophenyl)piperazin-1-yl)-2-oxoethyl)-7-phenylthieno[3,2-d]pyrimidin-4(3H)-one (CAS 1105235-10-6)
- 4-Hydroxy-6-iodo-1H-indazole-3-carbaldehyde (CAS 887570-50-5)
- tert-Butyl 4-(4-hydroxy-2-oxo-1,2,3,4-tetrahydroquinolin-3-yl)piperidine-1-carboxylate (CAS 1337918-85-0)
- Hexapeptide-11 (CAS 100684-36-4)
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