1-{2-[7-(4-chloro-3-nitrophenyl)pyrazolo[1,5-a]pyrimidin-2-yl]thiophen-3-yl}-2,5-dimethyl-1H-pyrrole CAS 439120-62-4
| CAS No. | 439120-62-4 |
| Molecular Formula | C22H16ClN5O2S |
| Molecular Weight | 449.91 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-{2-[7-(4-chloro-3-nitrophenyl)pyrazolo[1,5-a]pyrimidin-2-yl]thiophen-3-yl}-2,5-dimethyl-1H-pyrrole (CAS 439120-62-4) is a high-purity analytical reference standard with the molecular formula C22H16ClN5O2S and a molecular weight of 449.91 g/mol.
1-{2-[7-(4-chloro-3-nitrophenyl)pyrazolo[1,5-a]pyrimidin-2-yl]thiophen-3-yl}-2,5-dimethyl-1H-pyrrole (C22H16ClN5O2S) contains a steroid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage, chlorine substitution. It is notably hygroscopic, halogen substitution raises its density and boiling point, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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 | C22H16ClN5O2S |
| Molecular Weight | 449.91 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) | 17.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 5 |
| Sulfur Atoms | 1 |
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