3-(4-Isobutylphenyl)-1-(o-tolyl)-1H-pyrazole-5-carboxylic acid CAS 618102-98-0
| CAS No. | 618102-98-0 |
| Molecular Formula | C21H22N2O2 |
| Molecular Weight | 334.41 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 3-(4-Isobutylphenyl)-1-(o-tolyl)-1H-pyrazole-5-carboxylic acid (CAS 618102-98-0), a certified reference material (molecular formula C21H22N2O2, MW 334.41 g/mol) for analytical method development and quality control.
Owing to a steroid core, an amide group, a hydroxyl group, an ether linkage, 3-(4-Isobutylphenyl)-1-(o-tolyl)-1H-pyrazole-5-carboxylic acid is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 334.41 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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 | C21H22N2O2 |
| Molecular Weight | 334.41 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) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1985 |
| Nitrogen Atoms | 2 |
Related Isobutylphenyl Standards
- 3-(4-Isobutylphenyl)-1-(m-tolyl)-1H-pyrazole-5-carboxylic acid (CAS 618102-94-6)
- 3-(4-Isobutylphenyl)-1-(p-tolyl)-1H-pyrazole-5-carboxylic acid (CAS 618102-90-2)
- 2-(4-Isobutylphenyl)-6,8-dimethylquinoline-4-carboxylic acid (CAS 932841-29-7)
- (E)-3-(4-isobutylphenyl)-N-(2,3,4-trifluorophenyl)acrylamide (CAS 329778-63-4)
- 2-(4-Isobutylphenyl)-6-methylquinoline-4-carbonyl chloride (CAS 1160253-59-7)
- N-(1-(4-Isobutylphenyl)ethyl)-2-(methylthio)nicotinamide (CAS 795294-92-7)
- 2-(4-Isobutylphenyl)quinoline-4-carbonyl chloride (CAS 1160264-74-3)
- (E)-3-(4-isobutylphenyl)-N-(4-methoxybenzyl)acrylamide (CAS 329778-76-9)
Recommended Standards
- 3-(4-Isobutoxy-2-methylphenyl)-1-phenyl-1H-pyrazole-4-carbaldehyde (CAS 956954-70-4)
- 3,4-Dibromobenzenesulfonyl chloride (CAS 81903-80-2)
- 3-(4-Butoxy-3-methylphenyl)-1-phenyl-1H-pyrazole-4-carbaldehyde (CAS 882220-50-0)
- 3,5-Dibromobenzene-1-sulfonyl chloride (CAS 39213-20-2)
- (R,E)-4-(3-Phosphonoallyl)piperazine-2-carboxylic acid (CAS 117414-74-1)
- LY 2874455 (CAS 1254473-64-7)
- 3,6-Di-tert-butylbenzene-1,2-diol (CAS 15512-06-8)
- 4-(Azidomethyl)-5-cyclopropyloxazole (CAS 2287312-41-6)
- 2-(Azetidin-3-yloxy)-4-(trifluoromethyl)pyridine (CAS 1428233-94-6)
- 4-Fluoro-2-((pentyloxy)methyl)benzaldehyde (CAS 1443348-28-4)
- 3-(3,5-Dimethylphenyl)-2-sulfanylidene-1H,2H,3H,4H-thieno[3,2-d]pyrimidin-4-one (CAS 1156110-81-4)
- N-(4-Acetylphenyl)-4-bromo-3-nitrobenzamide (CAS 1286050-26-7)
- (5,6-DIMETHYL-THIENO[2,3-D]PYRIMIDIN-4-YL)-HYDRAZINE 63894-54-2 BB 0219297 (CAS 63894-54-2)
- Insulin Degludec Impurity 13 (CAS CATO-C4X-215713)
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