(R)-2-(4-Fluoro-5-oxo-2,5-dihydrofuran-2-yl)acetic acid CAS 154540-22-4
| CAS No. | 154540-22-4 |
| Molecular Formula | C6H5FO4 |
| Molecular Weight | 160.10 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
(R)-2-(4-Fluoro-5-oxo-2,5-dihydrofuran-2-yl)acetic acid (CAS 154540-22-4), molecular formula C6H5FO4 and molecular weight 160.10 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to a carboxylic acid group, a hydroxyl group, an ether linkage, fluorine substitution, an aromatic ring system, (R)-2-(4-Fluoro-5-oxo-2,5-dihydrofuran-2-yl)acetic acid is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 160.10 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.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
As a certified reference material (CRM), (R)-2-(4-Fluoro-5-oxo-2,5-dihydrofuran-2-yl)acetic 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 | C6H5FO4 |
| Molecular Weight | 160.10 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, keep sealed and dry, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO, water |
| Stability | May oxidize slowly on prolonged air exposure; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2001 |
| Halogen Content | F-containing |
Related R Standards
- 5-Fluoro-3-(hydroxymethyl)pyrimidine-2,4(1H,3H)-dione (CAS 137442-18-3)
- 4-Fluoro-5-hydroxy-1-methyl-1H-pyrazole-3-carboxylic acid (CAS 1707364-83-7)
- 3-Fluoro-4-nitropyridin-1(2H)-ol (CAS 733758-54-8)
- 1-fluoro-4-oxo-cyclohexanecarboxylic acid (CAS 1374653-98-1)
- Methyl 1-fluoro-2-oxocyclopentanecarboxylate (CAS 141420-01-1)
- 3-Fluoro-4-methoxy-5,5-dimethylfuran-2(5H)-one (CAS 160564-37-4)
- ethyl 2-fluoro-2-(oxetan-3-ylidene)acetate (CAS 1793092-96-2)
- 1-Fluoro-2-oxocyclohexanecarboxylic acid (CAS 683200-75-1)
Recommended Standards
- 5-(trifluoromethyl)-1H-pyrrole-3-carbonitrile (CAS 143812-67-3)
- 1-Bromopentane-2,2,3,3,4,4,5,5,5-d9 (CAS 156673-70-0)
- 5-(trifluoromethyl)-1H-pyrrole-2-carbonitrile (CAS 143812-66-2)
- 4-(Trifluoromethyl)-1H-pyrrole-2-carbonitrile (CAS 143812-63-9)
- Wilforgine (CAS 37239-47-7)
- rel-(1r,3r)-3-(methoxymethyl)cyclobutan-1-amine (CAS 2091327-62-5)
- 7-[(Z)-2-Phenylethenyl]-2-{[(2E)-3-phenylprop-2-en-1-yl]sulfanyl}-[1,2,4]triazolo[1,5-a]pyrimidine (CAS 1164492-92-5)
- 1-Benzyl-3-(3-methoxyphenyl)-1h-pyrazole-4-carboxylic acid (CAS 956505-11-6)
- N-ethyl-N-methyl-3-(piperidin-4-yl)propanamide (CAS 1250826-71-1)
- 2-(4-(tert-Butyl)-1H-imidazol-2-yl)piperidine (CAS 1153268-84-8)
- Dipyridamole D20 (CAS 1189983-52-5)
- 3-[(carboxymethyl)sulfanyl]-2-acetamidopropanoic acid (CAS 26924-28-7)
- (1R)-3,3'-Dibromo-2,2'-dimethoxy-5,5',6,6',7,7',8,8'-octahydro-1,1'-binaphthalene (CAS 78229-12-6)
- Semaglutide impurity 62 (CAS CATO-C4X-222662)
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