Ashaconazole lmpurity 91 CAS CATO-C4X-123691
| CAS No. | CATO-C4X-123691 |
| Molecular Formula | C22H16BrF2N5OS |
| Molecular Weight | 516.36 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| 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.
Ashaconazole lmpurity 91 (CAS CATO-C4X-123691) is a certified pharmaceutical impurity reference standard with the molecular formula C22H16BrF2N5OS and a molecular weight of 516.36 g/mol.
Ashaconazole lmpurity 91 (C22H16BrF2N5OS) contains a steroid core, an amide group, sulfur-containing functionality, a hydroxyl group, an ether linkage, fluorine/bromine substitution. Halogen substitution raises its density and boiling point; 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 quantitative analysis by HPLC, GC, LC-MS/MS, or GC-MS as an external calibration standard; it can also be used for spiked-recovery experiments, LOD/LOQ determination, and LC-MS/MS multiple-reaction-monitoring (MRM) calibration.
Physical & Chemical Properties
| Molecular Formula | C22H16BrF2N5OS |
| Molecular Weight | 516.36 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) | 16.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Halogen Content | F/Br-containing |
| Nitrogen Atoms | 5 |
| Sulfur Atoms | 1 |
Related Ashaconazole Standards
Recommended Standards
- N-(2-Bromo-4,6-difluorophenyl)-2-((5-(pyridin-4-yl)-4-(p-tolyl)-4H-1,2,4-triazol-3-yl)thio)acetamide (CAS 477318-66-4)
- Methyl[tris(2-methylphenyl)phosphine]gold (CAS 110981-37-8)
- ((2R,3S,4R,5R)-5-(6-Amino-2-((3-aminopropyl)thio)-9H-purin-9-yl)-3,4-dihydroxytetrahydrofuran-2-yl)methyl trihydrogen diphosphate (CAS 110224-45-8)
- XY 018 (CAS 1873358-87-2)
- Lefamulinum Impurity 44 (CAS CATO-C4X-304744)
- Brexpiprazole Impurity N19 (CAS 2059942-14-0)
- Valaciclovir Nitroso Impurity 48 (CAS CATO-C4X-124848)
- 53I7K68X7Z 672-89-9 Methyltriacetolactone 4-Methoxy-6-methyl-2H-pyran-2-one 2H-Pyran-2-one, 4-methoxy-6-methyl- 5-18-01-00110 (Beilstein Handbook Reference) BRN 0115970 EINECS 211-600-9 Methyltriacetolacton [German] NSC 139216 Methyltriacetolacton UNII-53I7K68X7Z (CAS 672-89-9)
- (3R,5S)-4-aminoadamantan-1-ol (CAS 62058-13-3)
- 2-(1-Methyl-1h-indazol-3-yl)ethanethioamide (CAS 1497905-63-1)
- 4-(4-Benzylpiperazin-1-yl)butan-1-amine (CAS 4487-05-2)
- (4-Bromo-3-methoxyphenyl)(pyrrolidin-1-yl)methanone (CAS 876752-72-6)
- 1-Methylinosine (CAS 2140-73-0)
- Mitogenic Pentapeptide (CAS 87173-03-3)
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