Galantamine EP Impurity B CAS 1668-85-5
| CAS No. | 1668-85-5 |
| Molecular Formula | C17H21NO3 |
| Molecular Weight | 287.35 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
CATO manufactures Galantamine EP Impurity B 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.
Galantamine EP Impurity B (CAS 1668-85-5) is a certified pharmaceutical impurity reference standard with the molecular formula C17H21NO3 and a molecular weight of 287.35 g/mol.
Structurally, Galantamine EP Impurity B (C17H21NO3) contains a steroid core, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 8.0, corresponding to approximately 8 ring(s) or double-bond equivalent(s). With a molecular weight of 287.35 g/mol, it falls into the medium-molecular-weight range. 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.
Physical & Chemical Properties
| Molecular Formula | C17H21NO3 |
| Molecular Weight | 287.35 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | >95% |
| 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) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
| Nitrogen Atoms | 1 |
Related Galantamine Standards
- Galantamine Impurity 11 (CAS 21041-10-1)
- Galantamine EP Impurity F (ent-Galantamine) (CAS 60384-53-4)
- Galantamine EP Impurity A (Galantaminone) (CAS 510-77-0)
- Galantamine EP Impurity C (CAS 21133-52-8)
- Galantamine-d6 (CAS 1128109-00-1)
- Galantamine EP Impurity E (N-Desmethyl Galanthamine) (CAS 41303-74-6)
- Galantamine Impurity 6 (CAS 60755-80-8)
- Epi-Galantamine N-Oxide (CAS 366485-18-9)
Recommended Standards
- Dobutamine Impurity 52 (CAS 1059182-81-8)
- Phenylephrine Impurity 104 (CAS CATO-C4X-1467104)
- Donepezil Impurity 33 (E/Z Mixture) (CAS 149874-91-9)
- Atropine Impurity 23 (CAS 22226-37-5)
- Erythromycin Compound M3 (CAS 119665-62-2)
- Ursodeoxycholic Acid EP Impurity C (CAS 434-13-9)
- Azilsartan Impurity 55 (CAS 1883681-10-4)
- 3-(1,3,5-Triazin-2-yl)-1,8-naphthyridin-2-amine (CAS 60467-89-2)
- Prednisone Impurity 14 (CAS CATO-C4X-169414)
- 2-(Difluoromethyl)-4-iodo-3-methylpyridine-5-sulfonamide (CAS 1804868-30-1)
- S-(Benzo[d]thiazol-2-yl)-N,N-dicyclohexylthiohydroxylamine (CAS 4979-32-2)
- 1-(2-Fluoro-4-methylphenyl)-1H-pyrrole-2,5-dione (CAS 1030420-86-0)
- Ethyl 4-chloro-8-(trifluoromethoxy)quinoline-3-carboxylate (CAS 1040013-63-5)
- Semaglutide Impurity 184 (CAS CATO-C4X-2226184)
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