7-Bromo-4-oxo-3,4-dihydrophthalazine-1-carboxylic acid CAS 2629316-01-2
| CAS No. | 2629316-01-2 |
| Molecular Formula | C9H5BrN2O3 |
| Molecular Weight | 269.05 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Owing to a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, bromine substitution, 7-Bromo-4-oxo-3,4-dihydrophthalazine-1-carboxylic acid is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 269.05 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.
CATO supplies 7-Bromo-4-oxo-3,4-dihydrophthalazine-1-carboxylic acid (CAS 2629316-01-2), a certified reference material (molecular formula C9H5BrN2O3, MW 269.05 g/mol) for analytical method development and quality control.
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-4-oxo-3,4-dihydrophthalazine-1-carboxylic acid 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 | C9H5BrN2O3 |
| Molecular Weight | 269.05 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, faint amine-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2001 |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 2 |
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Recommended Standards
- 7-Bromo-4-hydroxy-1,5-naphthyridine-3-carboxylic acid (CAS 97267-59-9)
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- 7-Bromo-5-nitroquinolin-8-ol (CAS 23521-17-7)
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- 3-Cyclopropoxy-4-iodo-2-isopropoxypyridine (CAS 1243287-74-2)
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