7-Bromo-5-fluoro-4-methylphthalazin-1(2H)-one CAS 2654747-55-2
| CAS No. | 2654747-55-2 |
| Molecular Formula | C9H6BrFN2O |
| Molecular Weight | 257.06 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Based on its molecular formula C9H6BrFN2O, 7-Bromo-5-fluoro-4-methylphthalazin-1(2H)-one contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, fluorine/bromine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 257.06 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).
7-Bromo-5-fluoro-4-methylphthalazin-1(2H)-one (CAS 2654747-55-2) is a high-purity analytical reference standard with the molecular formula C9H6BrFN2O and a molecular weight of 257.06 g/mol.
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), 7-Bromo-5-fluoro-4-methylphthalazin-1(2H)-one 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 | C9H6BrFN2O |
| Molecular Weight | 257.06 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.) | 2002 |
| Halogen Content | F/Br-containing |
| Nitrogen Atoms | 2 |
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Recommended Standards
- 6-bromo-7-fluoro-8-methyl-4H-chromen-4-one (CAS 2924578-84-5)
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- 7-Bromo-6-fluoro-4-methylphthalazin-1(2H)-one (CAS 2654747-29-0)
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- 3-(3-Methoxy-4-nitro-pyrazol-1-yl)-propionic acidethyl ester (CAS 1001500-79-3)
- 4-Bromobenzo[b]thiophen-3-amine (CAS 1935402-30-4)
- 3-methylcyclohex-3-enone (CAS 31883-98-4)
- Lovastatin Impurity 20 (CAS CATO-C4X-168420)
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