3,7-Dibromophenothiazin-5-iumbromide CAS 46710-21-8
| CAS No. | 46710-21-8 |
| Molecular Formula | C12H6Br2NS |
| Molecular Weight | N/A |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
3,7-Dibromophenothiazin-5-iumbromide (CAS 46710-21-8), molecular formula C12H6Br2NSBr and molecular weight 435.96 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to a nitrogen-containing heterocyclic scaffold, a nitrile group, sulfur-containing functionality, bromine substitution, 3,7-Dibromophenothiazin-5-iumbromide is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 435.96 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.
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.
As a certified reference material (CRM), 3,7-Dibromophenothiazin-5-iumbromide 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 | C12H6Br2NS Br |
| Molecular Weight | 435.96 g/mol |
| Purity | 97%+ |
| Storage | Store at room temperature, protect from light |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1970 |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Recommended Standards
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- Methyl 2-acetamido-4-bromo-3-fluoro-5-iodobenzoate (CAS 2803279-89-0)
- (2-Amino-3,5-dimethoxyphenyl)methanol (CAS 139617-17-7)
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- 2-nitrobenzo[d]oxazole-4-carbonitrile (CAS 1803832-26-9)
- Peramivir Impurity 14 (CAS 2124296-37-1)
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