1-Phenyl-3-(4-propoxyphenyl)-1H-pyrazole-4-carbaldehyde CAS 431920-75-1
| CAS No. | 431920-75-1 |
| Molecular Formula | C19H18N2O2 |
| Molecular Weight | 306.36 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including 1-Phenyl-3-(4-propoxyphenyl)-1H-pyrazole-4-carbaldehyde.
1-Phenyl-3-(4-propoxyphenyl)-1H-pyrazole-4-carbaldehyde (CAS 431920-75-1), molecular formula C19H18N2O2 and molecular weight 306.36 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, 1-Phenyl-3-(4-propoxyphenyl)-1H-pyrazole-4-carbaldehyde (C19H18N2O2) contains a steroid core, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 12.0, corresponding to approximately 12 ring(s) or double-bond equivalent(s). With a molecular weight of 306.36 g/mol, it falls into the moderately-high-molecular-weight range. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
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 | C19H18N2O2 |
| Molecular Weight | 306.36 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.) | 2025 |
| Nitrogen Atoms | 2 |
Related Phenyl Standards
- 1-Phenyl-3-(3-propoxyphenyl)-1H-pyrazole-4-carbaldehyde (CAS 1234692-21-7)
- 2-(3-Propoxyphenyl)quinoline-4-carboxylic acid (CAS 350989-68-3)
- 2-(4-Propoxyphenyl)quinoline-4-carboxylic acid (CAS 51842-69-4)
- 1'-(4-Propoxyphenyl)-[1,3'-bipyrrolidine]-2',5'-dione (CAS 89143-17-9)
- 4-((3-Methyl-4-propoxyphenyl)sulfonyl)morpholine (CAS 898639-12-8)
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- 2-(3-Propoxyphenyl)-1H-benzo[d]imidazole-5-carboxylic acid (CAS 1018571-24-8)
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Recommended Standards
- 1-Benzyl-3-(4-ethylphenyl)-1h-pyrazole-4-carboxylic acid (CAS 956386-81-5)
- 1-Phenyl-3-[4-(propan-2-yloxy)phenyl]-1h-pyrazole-4-carbaldehyde (CAS 956713-46-5)
- 1-benzyl-3-(3,4-dimethylphenyl)-1H-pyrazole-4-carboxylic acid (CAS 956199-09-0)
- 2-((4-Fluorophenyl)thio)-6-phenylnicotinonitrile (CAS 252058-88-1)
- Ethyl 4-Hydroxyphenylacetate (CAS 17138-28-2)
- Methyl 2-(2,3-dihydrobenzo[b][1,4]dioxin-2-yl)acetate (CAS 111042-25-2)
- N-(2-Isopropoxyphenyl)-2-nitrobenzenesulfonamide (CAS 295362-08-2)
- N-Boc-N-ethylcyclopropylamine (CAS 154875-07-7)
- Selexipag Impurity 7 (CAS CATO-C4X-19617)
- Diethyl cyclopentane-1,3-dicarboxylate (CAS 14277-18-0)
- 2-(Thiophen-2-yl)-N-(thiophen-3-ylmethyl)acetamide (CAS 1058258-91-5)
- 2-(4-methylphenyl)isonicotinic acid (CAS 1226205-64-6)
- 1-Hydroxy-3-oxo-N-(2-(piperazin-1-yl)ethyl)-3,5,6,7-tetrahydropyrido-[3,2,1-ij]quinoline-2-carboxamide dihydrochloride (CAS 1172850-18-8)
- TAT 14 Peptide (Nrf2 Activator III) (CAS 1362661-34-4)
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