4-(4-Chlorophenyl)-1-(p-tolyl)-1H-pyrazol-5-amine CAS 895029-27-3
| CAS No. | 895029-27-3 |
| Molecular Formula | C16H14ClN3 |
| Molecular Weight | 283.76 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Owing to a nitrogen-containing heterocyclic scaffold, a nitrile group, chlorine substitution, 4-(4-Chlorophenyl)-1-(p-tolyl)-1H-pyrazol-5-amine is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 283.76 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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).
4-(4-Chlorophenyl)-1-(p-tolyl)-1H-pyrazol-5-amine (CAS 895029-27-3) is a high-purity analytical reference standard with the molecular formula C16H14ClN3 and a molecular weight of 283.76 g/mol.
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 | C16H14ClN3 |
| Molecular Weight | 283.76 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| 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) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1987 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 3 |
Related Chlorophenyl Standards
- 1-benzyl-3-(3-chlorophenyl)-1H-pyrazol-5-amine (CAS 1154569-19-3)
- 1-(4-Chlorophenyl)-4-p-tolyl-1H-pyrazol-5-amine (CAS 1202029-96-6)
- 1-(3-Chlorophenyl)-3-(m-tolyl)-1H-pyrazol-5-amine (CAS 618098-32-1)
- 1-(3-Chlorophenyl)-3-(o-tolyl)-1H-pyrazol-5-amine (CAS 618098-33-2)
- 1-(3-Chlorophenyl)-3-(p-tolyl)-1H-pyrazol-5-amine (CAS 618098-27-4)
- 1-(3-Chlorophenyl)-4-(2-methylphenyl)-1H-pyrazol-5-amine (CAS 324009-02-1)
- 1-(3-Chlorophenyl)-4-(m-tolyl)-1H-pyrazol-5-amine (CAS 242797-15-5)
- 1-(3-Chlorophenyl)-4-(p-tolyl)-1H-pyrazol-5-amine (CAS 242797-19-9)
Recommended Standards
- 3-Chloro-7-(diallylamino)quinoline-8-carbonitrile (CAS 88347-07-3)
- 4-(4-Chlorophenyl)-3-methyl-1-phenyl-1H-pyrazol-5-amine (CAS 321385-90-4)
- 3-(4-Chlorophenyl)-1-(p-tolyl)-1H-pyrazol-5-amine (CAS 84637-30-9)
- 4-(4-Chloroquinazolin-2-yl)-N,N-dimethylaniline (CAS 79916-53-3)
- Dinalin (CAS 58338-59-3)
- Trimethylgallium (CAS 1445-79-0)
- N,N-Dimethyl-4-(5-phenyl-1,3,4-oxadiazol-2-yl)aniline (CAS 1874-35-7)
- 4,6-Dichloro-N-(methyl-d3)nicotinamide (CAS 1609531-34-1)
- 4-Hydroxy Triazolam β-D-Glucuronide (CAS 76960-93-5)
- Benzyl ((1-(2-aminoethyl)piperidin-3-yl)methyl)(cyclopropyl)carbamate (CAS 1353965-65-7)
- 3′,4′,5′-trimethoxyacetophenone (CAS 1136-86-3)
- HCV NS4A Protein (22-34) (H strain) (CAS 290832-54-1)
- 4-Amino-5-(methylthio)-1H-pyrazole-3-carboxamide (CAS 28668-18-0)
- Semaglutide impurity 93 (CAS CATO-C4X-222693)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com