Galantamine Impurity 11 CAS 21041-10-1
| CAS No. | 21041-10-1 |
| Molecular Formula | C17H21NO3 |
| Molecular Weight | 287.35 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Galantamine Impurity 11 (C17H21NO3) contains a steroid core, an amide group, a hydroxyl group, an ether linkage. Its high carbon-to-hydrogen ratio confers good lipid solubility, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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).
CATO supplies Galantamine Impurity 11 (CAS 21041-10-1), a pharmacopoeial impurity reference standard (molecular formula C17H21NO3, MW 287.35 g/mol) used for the identification and quantification of trace impurities in APIs.
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.
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.
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.) | 1963 |
| Nitrogen Atoms | 1 |
Related Galantamine Standards
- Galantamine EP Impurity B (CAS 1668-85-5)
- 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)
- Donepezil Impurity 33 (E/Z Mixture) (CAS 149874-91-9)
- 5-(((4-hydroxyphenethyl)(methyl)amino)methyl)-2-methoxyphenol (CAS 94753-90-9)
- Phenylephrine Impurity 104 (CAS CATO-C4X-1467104)
- Mabuterol Impurity 8 (CAS CATO-C4X-14548)
- Naltrexone impurity 35 (CAS CATO-C4X-147535)
- Ivabradine impurity 72 (CAS CATO-C4X-111972)
- BTA-1 (CAS 439858-28-3)
- WAY 267464 Dihydrochloride (CAS 847375-16-0)
- 2,6-Dichloro-3,5-dinitropyridin-4-amine (CAS 650140-90-2)
- 2-Chloro-5-(cyclohex-2-en-1-yl)pyridine (CAS 1187163-34-3)
- N-(2-Fluoro-5-methylphenyl)-5-(3-phenyl-1,2,4-oxadiazol-5-yl)pyrimidin-4-amine (CAS 1775499-85-8)
- Trichlormethiazide (CAS 133-67-5)
- Thymopoietin II Peptide Fragment (CAS 56795-64-3)
Why CATO?
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