2-(Tert-butyl)-1'-(4-(4-chlorophenyl)thiazol-2-yl)-3',5-dimethyl-1'H,2H-[3,4'-bipyrazol]-5'-ol CAS 246021-98-7
| CAS No. | 246021-98-7 |
| Molecular Formula | C21H22ClN5OS |
| Molecular Weight | 427.95 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), 2-(Tert-butyl)-1'-(4-(4-chlorophenyl)thiazol-2-yl)-3',5-dimethyl-1'H,2H-[3,4'-bipyrazol]-5'-ol meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
CATO supplies 2-(Tert-butyl)-1'-(4-(4-chlorophenyl)thiazol-2-yl)-3',5-dimethyl-1'H,2H-[3,4'-bipyrazol]-5'-ol (CAS 246021-98-7), a certified reference material (molecular formula C21H22ClN5OS, MW 427.95 g/mol) for analytical method development and quality control.
Structurally, 2-(Tert-butyl)-1'-(4-(4-chlorophenyl)thiazol-2-yl)-3',5-dimethyl-1'H,2H-[3,4'-bipyrazol]-5'-ol (C21H22ClN5OS) contains a steroid core, an amide group, sulfur-containing functionality, a hydroxyl group, an ether linkage, chlorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 13.0, corresponding to approximately 13 ring(s) or double-bond equivalent(s). With a molecular weight of 427.95 g/mol, it falls into the moderately-high-molecular-weight range. 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.
Physical & Chemical Properties
| Molecular Formula | C21H22ClN5OS |
| Molecular Weight | 427.95 g/mol |
| Purity | 97%+ |
| Storage | Store at room temperature, protect from light |
| 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) | 13.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 5 |
| Sulfur Atoms | 1 |
Recommended Standards
- N-({1H,2H,5H,6H,10bH-[1,2]oxazolo[3,2-a]isoquinolin-2-yl}methyl)-1-(6-chloropyridazin-3-yl)piperidine-4-carboxamide (CAS 339276-55-0)
- 4-Chloro-N-(2-(piperazin-1-yl)-1,2-dihydroacenaphthylen-1-yl)benzenesulfonamide (CAS 327102-17-0)
- Methyl 1-{5-[(4-chlorophenyl)methyl]-4,6-dimethylpyrimidin-2-yl}-5-pentyl-1H-1,2,3-triazole-4-carboxylate (CAS 866040-44-0)
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- 3-Bromo-2-(chloromethyl)thiophene (CAS 7353-88-0)
- (S)-1-(3-fluoro-4-methylphenyl)but-3-en-1-amine (CAS 1270107-35-1)
- 1-(4-{[3-(4-methoxyphenyl)-1,2,4-oxadiazol-5-yl]methyl}piperidin-1-yl)-4-phenylbutan-1-one (CAS 1775297-98-7)
- Semaglutide Impurity 139 (CAS CATO-C4X-2226139)
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