4-Fluoro-2-(1-phenyl-1H-pyrazol-5-yl)phenol CAS 288401-63-8
| CAS No. | 288401-63-8 |
| Molecular Formula | C15H11FN2O |
| Molecular Weight | 254.26 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies 4-Fluoro-2-(1-phenyl-1H-pyrazol-5-yl)phenol (CAS 288401-63-8), a certified reference material (molecular formula C15H11FN2O, MW 254.26 g/mol) for analytical method development and quality control.
Owing to a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, fluorine substitution, 4-Fluoro-2-(1-phenyl-1H-pyrazol-5-yl)phenol is typically pale yellow to yellow low-melting solid. Its solid-state physicochemical attributes — including a molecular weight of 254.26 g/mol — guide the selection of appropriate sample preparation and analytical techniques. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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.
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C15H11FN2O |
| Molecular Weight | 254.26 g/mol |
| 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) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Halogen Content | F-containing |
| Nitrogen Atoms | 2 |
Related Fluoro Standards
- 5-Fluoro-2-((4-methoxyphenyl)ethynyl)benzaldehyde (CAS 1042369-35-6)
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- 4-((4-Fluoro-2-nitrophenyl)amino)cyclohexan-1-ol (CAS 1233958-92-3)
- (1-(3-Fluoro-2-nitrophenyl)piperidin-3-yl)methanol (CAS 1252463-51-6)
- 3-Fluoro-4-(quinolin-4-yloxy)aniline (CAS 1308641-96-4)
- 4-Fluoro-2-((4-methoxyphenyl)ethynyl)benzaldehyde (CAS 1322091-24-6)
- 2-Fluoro-5-methoxy-4-(morpholine-4-carbonyl)aniline (CAS 1401423-32-2)
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Recommended Standards
- 4-Cyano-N-(4-fluorobenzyl)benzamide (CAS 512181-82-7)
- 4-Methyl-2-oxo-2H-chromen-7-yl methanesulfonate (CAS 62113-92-2)
- 4-[(2-cyanoethyl)sulfamoyl]benzoic acid (CAS 851288-55-6)
- 5-(2-Fluorophenyl)-3-(m-tolyl)-1,2,4-oxadiazole (CAS 692771-01-0)
- 1,6-Naphthyridine-2-carboximidamide hydrochloride (CAS 1179360-44-1)
- 3,5-Difluoro-2-piperidinomethyl benzophenone (CAS 898773-79-0)
- tert-Butyl 1H-spiro[isoquinoline-4,4-piperidine]-2(3H)-carboxylateHCl (CAS 889139-52-0)
- 3-Ethoxybenzaldehyde (CAS 22924-15-8)
- Ruxolitinib Impurity 117 (CAS CATO-C4X-2058117)
- Methyl 2-(((tert-butoxycarbonyl)amino)methyl)benzofuran-7-carboxylate (CAS 2767442-70-4)
- (3R,5R)-4,4-Difluoro-3,5-dimethylpiperidine (CAS 2287247-75-8)
- 4-Fluoro-3-nitro-benzylamine hydrochloride (CAS 1187930-69-3)
- N-[(1R,2S)-2,3-Dihydro-2-hydroxy-1H-inden-1-yl]acetamide (CAS 313952-36-2)
- Semaglutide impurity 22(OtBu-Ste-γGlu(OtBu)-AEEA-AEEA-OH) (CAS 1118767-16-0)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
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- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com