Papaverine EP Impurity B (Papaverinol) CAS 482-76-8
| CAS No. | 482-76-8 |
| Molecular Formula | C20H21NO5 |
| Molecular Weight | 355.38 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Papaverine EP Impurity B (Papaverinol) (CAS 482-76-8) is a certified pharmaceutical impurity reference standard with the molecular formula C20H21NO5 and a molecular weight of 355.38 g/mol.
Based on its molecular formula C20H21NO5, Papaverine EP Impurity B (Papaverinol) 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 355.38 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
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.
CATO manufactures Papaverine EP Impurity B (Papaverinol) 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 | C20H21NO5 |
| Molecular Weight | 355.38 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 methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
| Nitrogen Atoms | 1 |
Related Papaverine Standards
- Papaverine impurity 25 (CAS 33520-96-6)
- Papaverine EP Impurity D (Papaveraldine) (CAS 522-57-6)
- Papaverine EP Impurity F (CAS 139-76-4)
- Papaverine impurity 24 (CAS 33490-73-2)
- Papaverine Impurity 26 (CAS CATO-C4X-206726)
- Papaverine Impurity 39 (CAS 75608-42-3)
- Papaverine Impurity 40 (CAS 361389-65-3)
- Papaverine Impurity 42 (CAS CATO-C4X-206742)
Recommended Standards
- Indobufen Impurity 44 (CAS CATO-C4X-179244)
- Ketorolac Impurity 37 (CAS CATO-C4X-166937)
- Berberine Impurity 33 (CAS 100101-07-3)
- Naloxone Impurity 19 (CAS CATO-C4X-149319)
- CAS 1203904-18-0 (CAS 1203904-18-0)
- Brivaracetam Impurity 168 (CAS CATO-C4X-2007168)
- Indocyanine Green Impurity 26 (CAS 40880-56-6)
- 4-Ethynylcyclohexanamine (CAS 117241-80-2)
- 5,6-Dibromopyridine-2,3-diamine (CAS 1615736-65-6)
- (5-Bromo-2-(prop-2-yn-1-yloxy)phenyl)methanol (CAS 693806-45-0)
- 3-(Chloromethyl)-5-phenylpyridine (CAS 177976-31-7)
- Omeprazole Impurity 54 (CAS 187222-18-0)
- 1-(4-methylphenyl)-3-(propan-2-yl)-1H-pyrazol-5-amine (CAS 1154569-98-8)
- Biotinyl-Neuropeptide W-23 (human) (CAS 1815618-09-7)
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