1-{5-[(4-chlorophenyl)sulfanyl]-4-(4-methoxyphenyl)-1,3-thiazol-2-yl}-4-(4-methoxyphenyl)-1H-pyrazol-5-amine CAS 956977-32-5
| CAS No. | 956977-32-5 |
| Molecular Formula | C26H21ClN4O2S2 |
| Molecular Weight | 521.05 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.
1-{5-[(4-chlorophenyl)sulfanyl]-4-(4-methoxyphenyl)-1,3-thiazol-2-yl}-4-(4-methoxyphenyl)-1H-pyrazol-5-amine (CAS 956977-32-5) is a high-purity analytical reference standard with the molecular formula C26H21ClN4O2S2 and a molecular weight of 521.05 g/mol.
Structurally, 1-{5-[(4-chlorophenyl)sulfanyl]-4-(4-methoxyphenyl)-1,3-thiazol-2-yl}-4-(4-methoxyphenyl)-1H-pyrazol-5-amine (C26H21ClN4O2S2) contains a steroid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage, chlorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 18.0, corresponding to approximately 18 ring(s) or double-bond equivalent(s). With a molecular weight of 521.05 g/mol, it falls into the moderately-high-molecular-weight range. 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).
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 | C26H21ClN4O2S2 |
| Molecular Weight | 521.05 g/mol |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 18.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1987 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 4 |
| Sulfur Atoms | 2 |
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- tert-Butyl 4-(5-chloro-2-fluorobenzoyl)piperidine-1-carboxylate (CAS 1228631-50-2)
- 2-(((1-Benzylpyrrolidin-3-yl)methyl)(ethyl)amino)acetic acid (CAS 1353956-49-6)
- 3-Methyl-4-nitro-isothiazole-5-carbonitrile (CAS 4577-00-8)
- 1-(2-Fluoro-4-nitrophenyl)-4-phenylpiperazine (CAS 556801-40-2)
- 4-Methoxyphenyl 3-O-Benzyl-4,6-O-benzylidene-β-D-glucopyranoside (CAS 303127-81-3)
- Semaglutide impurity 100 (CAS CATO-C4X-2226100)
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