QO 58 CAS 1259536-62-3
| CAS No. | 1259536-62-3 |
| Molecular Formula | C18H8Cl2F4N4O |
| Molecular Weight | 443.18 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.
QO 58 (CAS 1259536-62-3), molecular formula C18H8Cl2F4N4O and molecular weight 443.18 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C18H8Cl2F4N4O, QO 58 contains a steroid core, an amide group, a hydroxyl group, an ether linkage, fluorine/chlorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 443.18 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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 | C18H8Cl2F4N4O |
| Molecular Weight | 443.18 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, low volatility) |
| 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) | 14.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1990 |
| Halogen Content | F/Cl-containing |
| Nitrogen Atoms | 4 |
Recommended Standards
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- 1-(3-(1-Ethylpiperidin-2-yl)pyridin-2-yl)-4-methylpiperazine (CAS 1352530-81-4)
- Methyl(S)-3-(4-(benzyloxy)phenyl)-2-hydroxypropanoate (CAS 481072-37-1)
- 4-Cyclopropoxy-2-(methylthio)pyridine (CAS 1243447-80-4)
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- 3-Amino-3-cyclopropyl-2,2-dimethylpropan-1-ol hydrochloride (CAS 1803581-75-0)
- cis-N-(4-(Aminomethyl)cyclohexyl)methanesulfonamide (CAS 2212004-12-9)
- Peptide 431 (CAS CATO-CPTD788431)
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