5-[(4-Fluorophenyl)methoxy]-4-oxo-4H-pyran-2-carboxylic acid CAS 1040348-99-9
| CAS No. | 1040348-99-9 |
| Molecular Formula | C13H9FO5 |
| Molecular Weight | 264.21 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Structurally, 5-[(4-Fluorophenyl)methoxy]-4-oxo-4H-pyran-2-carboxylic acid (C13H9FO5) contains a carboxylic acid group, a hydroxyl group, an ether linkage, fluorine substitution, an aromatic ring system. The molecule exhibits a degree of unsaturation (DBE) of 9.0, corresponding to approximately 9 ring(s) or double-bond equivalent(s). With a molecular weight of 264.21 g/mol, it falls into the medium-molecular-weight range. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
CATO supplies 5-[(4-Fluorophenyl)methoxy]-4-oxo-4H-pyran-2-carboxylic acid (CAS 1040348-99-9), a certified reference material (molecular formula C13H9FO5, MW 264.21 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.
CATO manufactures 5-[(4-Fluorophenyl)methoxy]-4-oxo-4H-pyran-2-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 | C13H9FO5 |
| Molecular Weight | 264.21 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) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1988 |
| Halogen Content | F-containing |
Related Fluorophenyl Standards
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Recommended Standards
- Fezolinetant Impurity 24 (CAS CATO-C4X-327024)
- 5-[(2-Fluorobenzyl)oxy]-4-oxo-4H-pyran-2-carboxylic Acid (CAS 1040349-01-6)
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- (2Z)-2-Amino-3-[(E)-{[3-(trifluoromethyl)phenyl]methylidene}amino]but-2-enedinitrile (CAS 1048915-39-4)
- N1-(3-chloro-5-(trifluoromethyl)pyridin-2-yl)-N2-(4-chlorobenzyl)ethane-1,2-diamine (CAS 338406-37-4)
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