5-Bromo-2,3-diphenylpyrazine CAS 243472-70-0
| CAS No. | 243472-70-0 |
| Molecular Formula | C16H11BrN2 |
| Molecular Weight | 311.18 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 311.18 g/mol gives 5-Bromo-2,3-diphenylpyrazine distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
CATO supplies 5-Bromo-2,3-diphenylpyrazine (CAS 243472-70-0), a certified reference material (molecular formula C16H11BrN2, MW 311.18 g/mol) for analytical method development and quality control.
Owing to a nitrogen-containing heterocyclic scaffold, a nitrile group, bromine substitution, 5-Bromo-2,3-diphenylpyrazine is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 311.18 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.
CATO manufactures 5-Bromo-2,3-diphenylpyrazine 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 | C16H11BrN2 |
| Molecular Weight | 311.18 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 2 |
Related Bromo Standards
- 3,3'-(5-Bromo-1,3-phenylene)dipyridine (CAS 1030380-36-9)
- 2,2′-(5-Bromo-1,3-phenylene)bis[pyridine] (CAS 150239-89-7)
- 2-Bromo-4,6-diphenylpyrimidine (CAS 56181-49-8)
- 4-(3-Bromo-5-(pyridin-4-yl)phenyl)pyridine (CAS 361366-74-7)
- 4-Bromo-2,6-diphenylpyrimidine (CAS 40734-24-5)
- 5-Bromo-1H,1'H-3,4'-biindole (CAS 89346-30-5)
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Recommended Standards
- 5-(Pyridin-1(2H)-yl)-2,6-bis(trifluoromethyl)pyrimidin-4(5H)-one (CAS 87378-59-4)
- 6-(Benzyloxy)pyridine-3-boronic Acid Pinacol Ester (CAS 832735-54-3)
- 5-(4-Bromophenyl)-2,4'-bipyridine (CAS 859211-25-9)
- 7-Benzyl-2,4-dichloro-3-fluoro-5,6,7,8-tetrahydro-1,7-naphthyridine (CAS 2768872-77-9)
- (S)-tert-Butyl 3-(aminomethyl)piperidine-1-carboxylate hydrochloride (CAS 1217702-57-2)
- 2-(4-Isoxazolyl)acetonitrile (CAS 893640-97-6)
- L-Arginine 2,4-thiazolidinedicarboxylate (CAS 30986-62-0)
- N,N,5-Trimethyl-4,5-dihydrooxazole-4-carboxamide (CAS 553676-35-0)
- Diethyl 3-(cyanomethylene)pentanedioate (CAS 91248-21-4)
- (2-Fluoro-5-(methoxycarbamoyl)phenyl)boronic acid (CAS 874289-58-4)
- CAS 2010159-57-4 (CAS 2010159-57-4)
- 3-Amino-5-(trifluoromethyl)pyrazole (CAS 852443-61-9)
- Methyl 2,4-dioxoheptanoate (CAS 20577-63-3)
- Tirzepatide Impurity 45 (CAS CATO-C4X-324045)
Why CATO?
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