Propafenone Impurity 33 CAS CATO-C4X-132233
| CAS No. | CATO-C4X-132233 |
| Molecular Formula | C21H24N2O4 |
| Molecular Weight | 368.43 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including Propafenone Impurity 33.
As a process- or degradation-related impurity, Propafenone Impurity 33 (CAS CATO-C4X-132233, C21H24N2O4) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Based on its molecular formula C21H24N2O4, Propafenone Impurity 33 contains a flavonoid core, an amide group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 368.43 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
This reference standard supports related-substances testing and method development in line with ICH Q3A/Q3B guidance on impurity control, and is suitable for system suitability testing and forced-degradation studies.
CATO manufactures Propafenone Impurity 33 under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C21H24N2O4 |
| Molecular Weight | 368.43 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| 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) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 2 |
Related Propafenone Standards
- Propafenone Impurity 17 (CAS CATO-C4X-132217)
- Propafenone Impurity 25 (CAS CATO-C4X-132225)
- Propafenone Impurity 32 (CAS CATO-C4X-132232)
- Propafenone Impurity 16 (CAS CATO-C4X-132216)
- Propafenone Impurity 35 (CAS CATO-C4X-132235)
- (R)-Propafenone (CAS 107381-31-7)
- (S)-Propafenone (CAS 107381-32-8)
- (R)-Propafenone HCl (CAS 107381-35-1)
Recommended Standards
- Linagliptin Impurity 3 (CAS CATO-C4X-11013)
- N-nitroso-propafenone impurity B (CAS CATO-C4X-132237)
- Fmoc-Lys-OH (CAS 105047-45-8)
- Cefoxitin Impurity 12 (CAS 40514-94-1)
- Nicotinamide impurity 29 (CAS CATO-C4X-200029)
- Pemirolast Impurity 3 (CAS CATO-C4X-24703)
- Evocalcet impurity 56 (CAS 870966-25-9（free base）)
- 9-(3-Chloropropyl)-9h-purin-6-amine (CAS 19255-49-3)
- 4-(1,3-Thiazol-2-yl)oxan-4-amine (CAS 1250166-85-8)
- 4-(Aminomethyl)-n-(2-methoxyethyl)benzene-1-sulfonamide hydrochloride (CAS 1171739-44-8)
- 5-bromo-3-nitro-1H-indazole (CAS 921609-47-4)
- 2-(Methylthio)pyrimidine-5-carbonitrile (CAS 38275-43-3)
- 7-Acetoxycoumarin (CAS 10387-49-2)
- Des-Phe22-Tirzepatide (CAS CATO-CPTD788951)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com