[2,5-Dimethyl-4-oxazol-2-yl-3-(propane-1-sulfonyl)-phenyl]-(5-hydroxy-1-methyl-1H-pyrazol-4-yl)-methanone CAS 1231575-76-0
| CAS No. | 1231575-76-0 |
| Molecular Formula | C19H21N3O5S |
| Molecular Weight | 403.45 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
[2,5-Dimethyl-4-oxazol-2-yl-3-(propane-1-sulfonyl)-phenyl]-(5-hydroxy-1-methyl-1H-pyrazol-4-yl)-methanone (CAS 1231575-76-0), molecular formula C19H21N3O5S and molecular weight 403.45 g/mol, is a CATO reference standard with documented purity and traceability.
The molecular framework of [2,5-Dimethyl-4-oxazol-2-yl-3-(propane-1-sulfonyl)-phenyl]-(5-hydroxy-1-methyl-1H-pyrazol-4-yl)-methanone (C19H21N3O5S) is characterized by a flavonoid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. 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).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
As a certified reference material (CRM), [2,5-Dimethyl-4-oxazol-2-yl-3-(propane-1-sulfonyl)-phenyl]-(5-hydroxy-1-methyl-1H-pyrazol-4-yl)-methanone 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.
Physical & Chemical Properties
| Molecular Formula | C19H21N3O5S |
| Molecular Weight | 403.45 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 |
| Degree of Unsaturation (DBE) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1990 |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 1 |
Related Dimethyl Standards
- [2,5-Dimethyl-3-oxazol-2-yl-4-(propane-1-sulfonyl)-phenyl]-(5-hydroxy-1-methyl-1H-pyrazol-4-yl)-methanone (CAS 1231598-43-8)
- n-(1,5-Dimethyl-3-oxo-2-phenyl-2,3-dihydro-1h-pyrazol-4-yl)-2,5-dimethoxybenzenesulfonamide (CAS 725215-60-1)
- 2-[3-(2,5-Dimethyl-1H-pyrrol-1-yl)thiophen-2-yl]-6-(4-fluorophenyl)pyrazolo[1,5-a]pyrimidin-7-amine (CAS 439095-87-1)
- 4,6-Dimethyl-3-(phenylsulfonyl)pyridin-2-yl 2,6-difluorobenzoate (CAS 400082-23-7)
- 2-(3,5-Dimethyl-1H-pyrazole-1-carbonyl)-N-(3,5-dimethylphenyl)-N-methylthiophene-3-sulfonamide (CAS 1207022-15-8)
- N-(2-(3,5-dimethyl-1H-pyrazole-1-carbonyl)thiophen-3-yl)-N-ethyl-4-methylbenzenesulfonamide (CAS 1325303-32-9)
- N-(2-(3,5-dimethyl-1H-pyrazole-1-carbonyl)thiophen-3-yl)-4-ethyl-N-methylbenzenesulfonamide (CAS 1325303-98-7)
- N-[2-(3,5-Dimethyl-1H-pyrazole-1-carbonyl)thiophen-3-yl]-N,3,4-trimethylbenzene-1-sulfonamide (CAS 1325305-25-6)
Recommended Standards
- 2-(4-Fluorophenyl)-4-(4-(4-methoxyphenyl)piperazin-1-yl)pyrazolo[1,5-a]pyrazine (CAS 1111418-21-3)
- 2-((((9h-Fluoren-9-yl)methoxy)carbonyl)amino)-4-(methylsulfonyl)butanoic acid (CAS 1053236-36-4)
- (3-Ethanesulfonyl-2,5-dimethyl-4-oxazol-2-yl-phenyl)-(1-ethyl-5-hydroxy-1H-pyrazol-4-yl)-methanone (CAS 1231609-13-4)
- Linagliptin Impurity 47 (CAS 2468656-63-3)
- (+/-)-cis,trans-Abscisic Acid Methyl Ester (CAS 6901-96-8)
- 2-Chloro-4-hydroxy-3-(trifluoromethyl)pyridine (CAS 1227580-87-1)
- 1-Chloro-2-fluoro-3-(2,2,2-trifluoroethyl)benzene (CAS 1099598-23-8)
- Afatinib Impurity 47 (CAS CATO-C4X-100647)
- 2-(3-(Benzyl(methyl)amino)piperidin-1-yl)acetic acid (CAS 1353984-81-2)
- 2-(Difluoromethyl)-3-nitro-4-(trifluoromethoxy)pyridine-6-acetonitrile (CAS 1361775-68-9)
- tert-Butyl (R)-3-(4-methylbenzyl)piperazine-1-carboxylate (CAS 1240589-52-9)
- trans-(1R,3R)-3-Hydroxycyclopentane-1-carboxylic acid (CAS 55843-48-6)
- 4-(3-Bromophenyl)-5-methyl-2,4-dihydro-3H-1,2,4-triazol-3-one (CAS 259750-15-7)
- Semaglutide impurity 249 (CAS CATO-C4X-2226249)
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