(5-Cyclopropyl-isoxazol-4-yl)-(3-methanesulfonyl-2,5-dimethyl-4-oxazol-2-yl-phenyl)-methanone CAS 1231589-18-6
| CAS No. | 1231589-18-6 |
| Molecular Formula | C19H18N2O5S |
| Molecular Weight | 386.42 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.
(5-Cyclopropyl-isoxazol-4-yl)-(3-methanesulfonyl-2,5-dimethyl-4-oxazol-2-yl-phenyl)-methanone (CAS 1231589-18-6) is a high-purity analytical reference standard with the molecular formula C19H18N2O5S and a molecular weight of 386.42 g/mol.
(5-Cyclopropyl-isoxazol-4-yl)-(3-methanesulfonyl-2,5-dimethyl-4-oxazol-2-yl-phenyl)-methanone (C19H18N2O5S) contains a flavonoid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage. It is notably hygroscopic, 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.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C19H18N2O5S |
| Molecular Weight | 386.42 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°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) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1990 |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |
Related Cyclopropyl Standards
- (5-Cyclopropyl-isoxazol-4-yl)-(4-methanesulfonyl-2,5-dimethyl-3-oxazol-2-yl-phenyl)-methanone (CAS 1231578-88-3)
- N-Cyclopropyl-4-fluoro-N-((6-methyl-2-oxo-1,2-dihydroquinolin-3-yl)methyl)benzenesulfonamide (CAS 606095-26-5)
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- Methyl 3-cyclopropyl-1-(4-fluorophenyl)-6-phenyl-1H-pyrazolo[3,4-b]pyridine-4-carboxylate (CAS 1011397-19-5)
- 5-(2-cyclopropyl-1-(2-fluorophenyl)-2-oxoethyl)-4,5,6,7-tetrahydrothieno[3,2-c]pyridin-2-yl propionate (CAS 150322-44-4)
- 1-(1-(3-Cyclopropyl-1,2,4-oxadiazol-5-yl)cyclohexyl)-3-(2,3-dihydrobenzo[b][1,4]dioxin-6-yl)urea (CAS 1396765-97-1)
- 1-(2-(5-Cyclopropyl-3-(thiophen-2-yl)-1H-pyrazol-1-yl)ethyl)-3-(2,6-difluorophenyl)urea (CAS 1797245-09-0)
- 2-((2-Cyclopropyl-7,8-dimethoxy-2h-chromen-5-yl)methyl)-3-(phenylamino)acrylonitrile (CAS 192315-08-5)
Recommended Standards
- Fmoc-S-carbamoyl-L-cysteine (CAS 1354488-29-1)
- Ethyl 3-methyl-1-(4-phenoxybenzenesulfonyl)-1h-pyrazole-5-carboxylate (CAS 1177343-95-1)
- 1-(3-Fluorophenyl)-N-(1-(3-methyl-1,2,4-oxadiazol-5-yl)cyclohexyl)-5-oxopyrrolidine-3-carboxamide (CAS 1396680-82-2)
- Benzyl ((S)-1-(((S)-4-fluoro-3-oxobutan-2-yl)amino)-1-oxo-3-phenylpropan-2-yl)carbamate (CAS 105637-38-5)
- 2-cyano-N-[4-(2,4-dichlorophenyl)-1,3-thiazol-2-yl]acetamide (CAS 749906-95-4)
- 12-Amino-10-(4-bromophenyl)-8-oxo-4-(phenylamino)-13-oxa-3-thia-5,7-diazatricyclo[7.4.0.0^{2,6}]trideca-1(9),2(6),4,11-tetraene-11-carbonitrile (CAS 674806-65-6)
- Yuexiandajisu E (CAS 866556-16-3)
- Suvorexant Impurity 23 (CAS CATO-C4X-181223)
- 2-(1-Cyclopropyl-1H-imidazol-5-yl)acetic acid (CAS 1368104-51-1)
- 3-(2,4,6-Trimethylphenyl)aniline (CAS 851534-18-4)
- 6-Fluoroisoquinoline-1-carboxylic acid (CAS 1179149-37-1)
- Carbidopa Impurity 25 (CAS CATO-C4X-231025)
- GDC-0927 (R-isomer) (CAS 1642297-53-7)
- Fragment-[3-31]-Liraglutide (CAS CATO-C4X-199232)
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