Cyproheptadine impurity 14 CAS 34663-46-2
| CAS No. | 34663-46-2 |
| Molecular Formula | C21H21NO |
| Molecular Weight | 303.40 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Structurally, Cyproheptadine impurity 14 (C21H21NO) contains a steroid core, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 12.0, corresponding to approximately 12 ring(s) or double-bond equivalent(s). With a molecular weight of 303.40 g/mol, it falls into the moderately-high-molecular-weight range. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
CATO supplies Cyproheptadine impurity 14 (CAS 34663-46-2), a pharmacopoeial impurity reference standard (molecular formula C21H21NO, MW 303.40 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.
As a certified reference material (CRM), Cyproheptadine impurity 14 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 | C21H21NO |
| Molecular Weight | 303.40 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1966 |
| Nitrogen Atoms | 1 |
Related Cyproheptadine Standards
- Cyproheptadine N-Oxide (CAS 100295-63-4)
- Cyproheptadine Impurity 5 (CAS 54191-04-7)
- Cyproheptadine alpha-N-Oxide (CAS 54381-42-9)
- Cyproheptadine beta-N-Oxide (CAS 60251-34-5)
- Cyproheptadine EP Impurity C (CAS 3967-32-6)
- Cyproheptadine-d3 (CAS 2712455-05-3)
- Cyproheptadine impurity 11 (CAS 19431-71-1)
- Cyproheptadine impurity 12 (CAS 31232-24-3)
Recommended Standards
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- Dexamethasone Sodium Phosphate Impurity B (CAS 360-63-4)
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- Eltrombopag-13C4 (CAS 1217230-31-3)
- Ethyl 5-bromo-8-carbamoyl-9h-carbazole-2-carboxylate (CAS 1231892-27-5)
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- 6-Methyl-5-nitropyridine-2,4-diol (CAS 344749-44-6)
- (Leu31,Pro3?)-Neuropeptide Y (human, rat) trifluoroacetate salt (CAS 132699-73-1)
Why CATO?
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