1-cyclopentyl-5-phenyl-1H-pyrazole-4-carboxylic acid CAS 1306092-80-7
| CAS No. | 1306092-80-7 |
| Molecular Formula | C15H16N2O2 |
| Molecular Weight | 256.30 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The molecular framework of 1-cyclopentyl-5-phenyl-1H-pyrazole-4-carboxylic acid (C15H16N2O2) is characterized by a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by its high hydrophobicity (logP), which provides a practical basis for HPLC-UV/DAD or LC-MS method development. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
CATO supplies 1-cyclopentyl-5-phenyl-1H-pyrazole-4-carboxylic acid (CAS 1306092-80-7), a certified reference material (molecular formula C15H16N2O2, MW 256.30 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.
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 | C15H16N2O2 |
| Molecular Weight | 256.30 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) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1990 |
| Nitrogen Atoms | 2 |
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Recommended Standards
- 3-Amino-1-benzyl-4-(5-methylfuran-2-yl)azetidin-2-one (CAS 1291490-30-6)
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- 2-Phenyl-6-(piperazin-1-yl)pyridazin-3(2H)-one (CAS 1284410-31-6)
- 1310936-61-8 3-(1-Ethyl-4-methoxy-1H-indol-2-yl)-1H-pyrazol-5-amine MFCD14281877 (CAS 1310936-61-8)
- 2-(Aminomethyl)-4-cyano-3-(difluoromethyl)-6-hydroxypyridine (CAS 1805357-30-5)
- 3-Methyl-4-nitro-1-(2,2,2-trifluoroethyl)-1H-pyrazole-5-carboxylic acid (CAS 89239-84-9)
- 2-(3-(Trifluoromethyl)phenyl)propan-1-ol (CAS 618-96-2)
- 5-Amino-1-methyl-1,3-dihydro-2H-benzo[d]imidazol-2-one (CAS 54732-89-7)
- (3R,4S)-3-methyl-2-oxa-8-azaspiro[4.5]Decan-4-amine dihydrochloride (CAS 2306255-28-5)
- 3-Hydroxy-3-(5-(2-methylcyclopropyl)furan-2-yl)propanenitrile (CAS 1560070-68-9)
- n-(3-Cyanophenyl)-4-methoxybutanamide (CAS 1019587-39-3)
- 5-Bromo-1-(difluoromethoxy)-2,3-difluorobenzene (CAS 936249-95-5)
- Tert-butyl 5-aminooctahydro-2H-cyclopenta[c]pyridine-2-carboxylate (CAS 1823230-13-2)
- Semaglutide Impurity 145 (CAS CATO-C4X-2226145)
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