2,7-Dibromo-1,8-naphthyridine CAS 64976-53-0
| CAS No. | 64976-53-0 |
| Molecular Formula | C8H4Br2N2 |
| Molecular Weight | 287.94 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 287.94 g/mol gives 2,7-Dibromo-1,8-naphthyridine distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
2,7-Dibromo-1,8-naphthyridine (CAS 64976-53-0), molecular formula C8H4Br2N2 and molecular weight 287.94 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, 2,7-Dibromo-1,8-naphthyridine (C8H4Br2N2) contains a nitrogen-containing heterocyclic scaffold, a nitrile group, bromine substitution. The molecule exhibits a degree of unsaturation (DBE) of 7.0, corresponding to approximately 7 ring(s) or double-bond equivalent(s). With a molecular weight of 287.94 g/mol, it falls into the medium-molecular-weight range. 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.
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C8H4Br2N2 |
| Molecular Weight | 287.94 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, faint amine-like odor, low volatility) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| 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) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1975 |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 2 |
Related Dibromo Standards
- 2,5-Dibromo-1,8-naphthyridine (CAS 1260657-29-1)
- 1,4-Dibromo-2,6-naphthyridine (CAS 1353971-28-4)
- 2,5-Dibromo-3-nitro-pyridine (CAS 15862-37-0)
- 3,8-Dibromo-1,6-naphthyridine (CAS 17965-75-2)
- 3,5-Dibromo-1,7-naphthyridine (CAS 17965-77-4)
- 3,6-Dibromo-1,8-naphthyridine (CAS 17965-79-6)
- 1,4-Dibromo-2,7-naphthyridine (CAS 1823920-98-4)
- 2,6-dibromo-1H-inden-1-one (CAS 1909313-83-2)
Recommended Standards
- 2,6-Dibromo-1,8-naphthyridine (CAS 72754-04-2)
- 4,8-Dibromo-1,6-naphthyridine (CAS 72754-02-0)
- 2,6-Dibromo-1,5-naphthyridine (CAS 42309-15-9)
- 5,8-Dibromo-1,7-naphthyridine (CAS 67967-19-5)
- (5-(4-Bromophenyl)isoxazol-4-yl)methanol (CAS 430534-63-7)
- 2-(2-Bromo-3,4-dimethoxyphenyl)acetic acid (CAS 63856-83-7)
- Methyl 4-((methylamino)methyl)benzoate hydrochloride (CAS 160408-65-1)
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- 5-(3-Aminopropyl)-4H-1,2,4-triazol-3-amine (CAS 113513-34-1)
- Testosterone Impurity 38 (CAS CATO-C4X-243238)
- 10H-Benzo[b]pyrido[2,3-e][1,4]oxazine (CAS 261-83-6)
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