7-[(Z)-2-(4-Fluorophenyl)ethenyl]pyrazolo[1,5-a]pyrimidine-3-carbonitrile CAS 338394-49-3
| CAS No. | 338394-49-3 |
| Molecular Formula | C15H9FN4 |
| Molecular Weight | 264.26 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
7-[(Z)-2-(4-Fluorophenyl)ethenyl]pyrazolo[1,5-a]pyrimidine-3-carbonitrile (CAS 338394-49-3) is a high-purity analytical reference standard with the molecular formula C15H9FN4 and a molecular weight of 264.26 g/mol.
7-[(Z)-2-(4-Fluorophenyl)ethenyl]pyrazolo[1,5-a]pyrimidine-3-carbonitrile (C15H9FN4) contains a nitrogen-containing heterocyclic scaffold, a nitrile group, fluorine substitution. Halogen substitution raises its density and boiling point, its high carbon-to-hydrogen ratio confers good lipid solubility; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
As a certified reference material (CRM), 7-[(Z)-2-(4-Fluorophenyl)ethenyl]pyrazolo[1,5-a]pyrimidine-3-carbonitrile 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 | C15H9FN4 |
| Molecular Weight | 264.26 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) | 13.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Halogen Content | F-containing |
| Nitrogen Atoms | 4 |
Related Z Standards
- 3-(2-Fluorophenyl)-[1,2,4]triazolo[4,3-c]quinazoline (CAS 339025-73-9)
- 1-(4-Fluorophenyl)-4-propoxy-1h-pyrazole-3-carboxylic acid (CAS 1171790-42-3)
- 5-[(2-fluorophenyl)methoxy]-1,3-dimethyl-1H-pyrazole-4-carboxylic acid (CAS 1467884-48-5)
- 2-(4-Fluorophenyl)furo[2,3-b]quinoxaline (CAS 922145-30-0)
- 3-(1-(4-Fluorophenyl)-3-methyl-5-oxo-4,5-dihydro-1H-pyrazol-4-yl)propanoic acid (CAS 885530-21-2)
- 3-[2-(4-fluorophenyl)-5-methyl-3-oxo-2,3-dihydro-1h-pyrazol-4-yl]propanoic acid (CAS 877140-08-4)
- Ethyl 1-(4-fluorophenyl)-5-hydroxy-4-methyl-1H-pyrazole-3-carboxylate (CAS 274253-14-4)
- Methyl 2-(2-(4-fluorophenyl)-5-methyl-3-oxo-2,3-dihydro-1H-pyrazol-4-yl)acetate (CAS 477710-56-8)
Recommended Standards
- 5-Nitro-2-(phenylsulfonyl)pyridine (CAS 69770-61-2)
- Diethyl naphthalen-1-ylphosphonate (CAS 25944-75-6)
- 5-[(E)-1,3-Benzodioxol-5-ylmethylidene]-2-(hydroxyamino)-1,3-thiazol-4(5H)-one (CAS 73855-64-8)
- Ethyl 2-cyclopropyl-2-(diethoxyphosphoryl)acetate (CAS 2711041-06-2)
- 5-Isopropoxy-6-nitrobenzo[d][1,3]dioxole (CAS 1312698-37-5)
- 1-Benzyl-2-imino-8-methyl-3-(phenylsulfonyl)-1,2-dihydro-5H-dipyrido[1,2-a:2',3'-d]pyrimidin-5-one (CAS 606950-50-9)
- 2-Chloro-3-(4-nitrophenyl)propanenitrile (CAS 17849-31-9)
- 3-(2-Iodophenyl)-4-methyl-1h-pyrazol-5-amine (CAS 1187767-19-6)
- 3-((2,4,4-Trimethylpentan-2-yl)imino)-2,3-dihydrobenzo[d]isothiazole 1,1-dioxide (CAS 310458-15-2)
- 4-(Difluoromethyl)-3-fluoro-2-iodo-5-nitropyridine (CAS 1805481-19-9)
- 5-(Chlorodifluoromethyl)-3-(trifluoromethyl)isoxazole-4-carboxylic acid (CAS 1421605-03-9)
- {3-Phenyl-[1,2,4]triazolo[4,3-a]pyridin-6-yl}methanamine hydrochloride (CAS 1439899-11-2)
- Vinpocetine EP Impurity C HCl (CAS CATO-C4X-184310)
- Cycloaspeptide D (CAS 691363-62-9)
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