7-Fluoro-2-methyl-5-oxo-5H-chromeno[2,3-b]pyridine-3-carboxylic acid CAS 338778-16-8
| CAS No. | 338778-16-8 |
| Molecular Formula | C14H8FNO4 |
| Molecular Weight | 273.22 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including 7-Fluoro-2-methyl-5-oxo-5H-chromeno[2,3-b]pyridine-3-carboxylic acid.
7-Fluoro-2-methyl-5-oxo-5H-chromeno[2,3-b]pyridine-3-carboxylic acid (CAS 338778-16-8), molecular formula C14H8FNO4 and molecular weight 273.22 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C14H8FNO4, 7-Fluoro-2-methyl-5-oxo-5H-chromeno[2,3-b]pyridine-3-carboxylic acid contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, fluorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 273.22 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
CATO manufactures 7-Fluoro-2-methyl-5-oxo-5H-chromeno[2,3-b]pyridine-3-carboxylic acid 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 | C14H8FNO4 |
| Molecular Weight | 273.22 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-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, acetonitrile, DMSO, water (slightly soluble) |
| 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) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Halogen Content | F-containing |
| Nitrogen Atoms | 1 |
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