5-Methoxy-2-(4-phenyl-1H-pyrazol-3-yl)phenol CAS 394237-78-6
| CAS No. | 394237-78-6 |
| Molecular Formula | C16H14N2O2 |
| Molecular Weight | 266.29 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
CATO supplies 5-Methoxy-2-(4-phenyl-1H-pyrazol-3-yl)phenol (CAS 394237-78-6), a certified reference material (molecular formula C16H14N2O2, MW 266.29 g/mol) for analytical method development and quality control.
5-Methoxy-2-(4-phenyl-1H-pyrazol-3-yl)phenol (C16H14N2O2) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage. It is notably hygroscopic, its high carbon-to-hydrogen ratio confers good lipid solubility, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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.
Physical & Chemical Properties
| Molecular Formula | C16H14N2O2 |
| Molecular Weight | 266.29 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Nitrogen Atoms | 2 |
Related Methoxy Standards
- 5-Methoxy-1-(pyridin-3-ylmethyl)-1H-indole-3-carbaldehyde (CAS 1030421-44-3)
- 4-(3-Methoxy-4-nitrophenyl)-2,6-dimethylmorpholine (CAS 1135283-59-8)
- 6-Methoxy-4-methyl-3-phenylcoumarin (CAS 115059-27-3)
- Butyl 4-(2-methoxy-2-oxoethoxy)benzoate (CAS 1206109-89-8)
- 3-Methoxy-4-(oxan-4-ylmethoxy)benzoic acid (CAS 1281669-02-0)
- (1-(3-Methoxy-4-nitrophenyl)piperidin-3-yl)methanol (CAS 1410204-92-0)
- Ethyl 4-methoxy-3-methylphenethyl oxalate (CAS 1443335-37-2)
- Ethyl 2-(4-methoxy-3-propoxyphenyl)-2-oxoacetate (CAS 1443350-30-8)
Recommended Standards
- 5-Boc-4,5,6,7-tetrahydro-1H-pyrrolo[3,2-c]pyridine-4-carboxylic acid (CAS 2097068-40-9)
- 5-Methoxy-2-methyl-3-phenylbenzofuran-6-carbaldehyde (CAS 374912-51-3)
- 5-Benzyl-5-phenylimidazolidine-2,4-dione (CAS 4927-43-9)
- 5-Methoxy-4-methyl-2-(naphthalen-2-yloxy)pyrimidine (CAS 866017-89-2)
- 6-Amino-1H-indole-4-carbonitrile (CAS 885518-24-1)
- 3-(2-Ethoxy-2-oxoethylidene)-4-oxo-1-piperidinecarboxylic Acid 1,1-Dimethylethyl Ester (CAS 1395498-37-9)
- 4,4-Difluoro-1-piperidin-4-ylmethyl-piperidine (CAS 1878970-42-3)
- 1-(4-(Tert-butyl)phenyl)propan-1-one (CAS 71209-71-7)
- Ganciclovir Impurity 26 (CAS CATO-C4X-102126)
- 2-(2-Butoxyethyl)isoindoline-1,3-dione (CAS 56058-19-6)
- 4-Morpholinopiperidine-4-carboxamide (CAS 53654-12-9)
- 5-Bromo-2,9-di(undecan-6-yl)anthra[2,1,9-def:6,5,10-d'e'f']diisoquinoline-1,3,8,10(2H,9H)-tetraone (CAS 1309387-42-5)
- (R)-4-Methylpent-1-yn-3-ol (CAS 73522-97-1)
- Semaglutide Impurity 160 (x TFA Salt) (CAS CATO-C4X-2226160)
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