Modafinil EP Impurity A CAS 63547-24-0
| CAS No. | 63547-24-0 |
| Molecular Formula | C15H14O3S |
| Molecular Weight | 274.33 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
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.
Modafinil EP Impurity A (CAS 63547-24-0) is a certified pharmaceutical impurity reference standard with the molecular formula C15H14O3S and a molecular weight of 274.33 g/mol.
Based on its molecular formula C15H14O3S, Modafinil EP Impurity A contains a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, a polycyclic aromatic system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 274.33 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
As a certified reference material (CRM), Modafinil EP Impurity A 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 | C15H14O3S |
| Molecular Weight | 274.33 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1975 |
| Sulfur Atoms | 1 |
Related Modafinil Standards
- (R)-Modafinil EP Impurity A (CAS 112111-45-2)
- Modafinil (CAS 68693-11-8)
- Modafinil impurity 6 (CAS 112111-47-4)
- Modafinil impurity 7 (CAS 112111-43-0)
- Modafinil-d10 Carboxylate (CAS 1246819-82-8)
- (R)-Modafinil EP Impurity C (CAS 713134-72-6)
- (S)-Modafinil EP Impurity C (CAS 865811-65-0)
- Modafinil impurity 3 (CAS 101094-05-7)
Recommended Standards
- Apremilast Impurity 40 (CAS 2055542-18-0)
- Raloxifene Impurity 31 (CAS 63762-93-6)
- Ethyl 3-(3,5-dimethyl-1-(methylsulfonyl)-1h-pyrazol-4-yl)propanoate (CAS 1005582-15-9)
- m-PEG2-Tos (CAS 50586-80-6)
- Empagliflozin impurity 206 (CAS CATO-C4X-1065206)
- Diosmin EP Impurity D (CAS 1431536-92-3)
- Omeprazole EP Impurity H (CAS CATO-C4X-111298)
- 1,2-Bis(2-methoxyphenyl)ethane-1,2-diol (CAS 64158-26-5)
- (1S,2R,3R,5R)-tert-Butyl 3-amino-2-fluoro-8-azabicyclo[3.2.1]octane-8-carboxylate (CAS 2471794-33-7)
- ethyl 4-chloro-5-methyl-7-prop-1-ynyl-quinoline-3-carboxylate (CAS 2623407-29-2)
- Acesulfame Aspartame Salt (CAS 106372-55-8)
- 2-cyclopropylethanethioamide (CAS 1154385-73-5)
- 4-Methoxy-2-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzonitrile (CAS 863868-23-9)
- (Tyr9)-Cholecystokinin Octapeptide (sulfated) (H-9770.0005) (CAS 96607-61-3)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
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