3,7-Dibromo-10H-phenothiazine CAS 21667-32-3
| CAS No. | 21667-32-3 |
| Molecular Formula | C12H7Br2NS |
| Molecular Weight | 357.06 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
3,7-Dibromo-10H-phenothiazine (CAS 21667-32-3) is a high-purity analytical reference standard with the molecular formula C12H7Br2NS and a molecular weight of 357.06 g/mol.
Based on its molecular formula C12H7Br2NS, 3,7-Dibromo-10H-phenothiazine contains a nitrogen-containing heterocyclic scaffold, a nitrile group, sulfur-containing functionality, bromine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 357.06 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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-Dibromo-10H-phenothiazine 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 | C12H7Br2NS |
| Molecular Weight | 357.06 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, 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.) | 1963 |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
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Recommended Standards
- tert-Butyl (4,5-dibromothiophen-2-yl)carbamate (CAS 943321-93-5)
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- 4-(N-Ethyl-N-2-Hydroxyethyl)-2-Methylphenylenediamine Sulfate (CAS 25646-77-9)
- N,4-Dihydroxy-3,5-dimethylbenzimidamide (CAS 162854-15-1)
- Epinastine Impurity 24 (CAS 1110929-19-5)
- N-(3-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)cyclopropanecarboxamide (CAS 1031747-40-6)
- 1-(5-Amino-2-methylphenyl)-2,2,2-trifluoroethanone (CAS 252580-33-9)
- 2-Difluoromethoxy-4-fluorobenzotrifluoride (CAS 1806275-11-5)
- Peptide Impurity 09 X TFA Salt (CAS CATO-CPTD788809)
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