7-Bromo-2-chloro-4-methyl-1,5-naphthyridine CAS 2891456-40-7
| CAS No. | 2891456-40-7 |
| Molecular Formula | C9H6BrClN2 |
| Molecular Weight | 257.51 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
7-Bromo-2-chloro-4-methyl-1,5-naphthyridine (CAS 2891456-40-7), molecular formula C9H6BrClN2 and molecular weight 257.51 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C9H6BrClN2, 7-Bromo-2-chloro-4-methyl-1,5-naphthyridine contains a nitrogen-containing heterocyclic scaffold, a nitrile group, chlorine/bromine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 257.51 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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.
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 | C9H6BrClN2 |
| Molecular Weight | 257.51 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.) | 2004 |
| Halogen Content | Cl/Br-containing |
| Nitrogen Atoms | 2 |
Related Bromo Standards
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- 6-Bromo-1-chloro-4-methylphthalazine (CAS 1011291-80-7)
- 6-Bromo-1-chloro-2-naphthol (CAS 102169-88-0)
- 3-Bromo-8-chloroquinolin-4-amine (CAS 1065088-37-0)
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Recommended Standards
- 7-(Bromomethyl)-4-chloroquinazoline (CAS 234098-35-2)
- 7-Bromo-3-chloroquinolin-2-amine (CAS 2086768-55-8)
- 6-Bromo-7-chloroisoquinolin-3-amine (CAS 2143040-29-1)
- 7-Bromo-4-chloro-2-methylquinazoline (CAS 403850-84-0)
- 4-(2,2-Bis(4-methoxyphenyl)-1-phenylvinyl)benzaldehyde (CAS 1471980-33-2)
- 2-Amino-3-(difluoromethyl)-5-(trifluoromethyl)isonicotinonitrile (CAS 1805108-60-4)
- [2-Chloro-5-(trifluoromethyl)phenyl]ethylamine (CAS 42266-12-6)
- 2-((Furan-2-ylmethyl)thio)-5-methylpyrazine (CAS 59303-08-1)
- 2-(5-(2,3-Dihydrobenzo[b][1,4]dioxin-6-yl)isoxazol-3-yl)-N-((5-(thiophen-2-yl)isoxazol-3-yl)methyl)acetamide (CAS 1171842-27-5)
- 4-[4-(trifluoromethyl)-1H-pyrazol-1-yl]aniline (CAS 1393125-57-9)
- 1-Cyclohex-3-enylmethyl-piperazinetrifluoroacetate (CAS 436099-82-0)
- Prothiocarb hydrochloride (CAS 19622-19-6)
- Ibuprofen impurity 120 (CAS 124635-85-4)
- Glu17-Semaglutide (CAS CATO-C4X-2226209)
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