7-(3-(((4-Chlorophenyl)sulfonyl)methyl)-4-nitrophenyl)-2-methylpyrazolo[1,5-a]pyrimidine CAS 691868-58-3
| CAS No. | 691868-58-3 |
| Molecular Formula | C20H15ClN4O4S |
| Molecular Weight | 442.88 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of 7-(3-(((4-Chlorophenyl)sulfonyl)methyl)-4-nitrophenyl)-2-methylpyrazolo[1,5-a]pyrimidine is closely related to a flavonoid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage, chlorine substitution in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
7-(3-(((4-Chlorophenyl)sulfonyl)methyl)-4-nitrophenyl)-2-methylpyrazolo[1,5-a]pyrimidine (CAS 691868-58-3), molecular formula C20H15ClN4O4S and molecular weight 442.88 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to a flavonoid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage, chlorine substitution, 7-(3-(((4-Chlorophenyl)sulfonyl)methyl)-4-nitrophenyl)-2-methylpyrazolo[1,5-a]pyrimidine is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 442.88 g/mol — guide the selection of appropriate sample preparation and analytical techniques. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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.
CATO manufactures 7-(3-(((4-Chlorophenyl)sulfonyl)methyl)-4-nitrophenyl)-2-methylpyrazolo[1,5-a]pyrimidine under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C20H15ClN4O4S |
| Molecular Weight | 442.88 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) | 15.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1985 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 4 |
| Sulfur Atoms | 1 |
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Recommended Standards
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- 4-(2-(Tetrahydro-2H-pyran-4-yl)ethyl)aniline (CAS 1530778-16-5)
- 3,3-Dimethylindoline-2-carboxylic acid hydrochloride (CAS 106517-46-8)
- 2-(Cyclohexylsulfanyl)-4-(4-methylphenyl)-4-oxobutanoic acid (CAS 301193-84-0)
- 2-(pyrrolidin-1-yl)-1,3-thiazole (CAS 24255-45-6)
- Benzo(A)Pyrene (CAS 50-32-8)
- 2-(4-Acetyl-2-methylpiperazin-1-yl)acetic acid (CAS 1353954-86-5)
- tert-Butyl (S)-2-methyl-3,5-dioxopyrrolidine-1-carboxylate (CAS 890709-66-7)
- 6-Bromo-4-methylquinolin-3-amine (CAS 1201646-50-5)
- 11-Methyl-9,10-dihydro-9,10-ethanoanthracene (CAS 32363-36-3)
- Proinsulin C-Peptide (55-89) (human) (CAS 11097-48-6)
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