Reserpine Impurity 4 CAS 1178-28-5
| CAS No. | 1178-28-5 |
| Molecular Formula | C24H32N2O5 |
| Molecular Weight | 428.52 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 Reserpine Impurity 4.
Reserpine Impurity 4 (CAS 1178-28-5) is a certified pharmaceutical impurity reference standard with the molecular formula C24H32N2O5 and a molecular weight of 428.52 g/mol.
Owing to a flavonoid core, an amide group, a hydroxyl group, an ether linkage, Reserpine Impurity 4 is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 428.52 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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.
As a certified reference material (CRM), Reserpine Impurity 4 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 | C24H32N2O5 |
| Molecular Weight | 428.52 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°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) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
| Nitrogen Atoms | 2 |
Related Reserpine Standards
Recommended Standards
- Hydrocortisone Impurity 43 (CAS 7780-63-4)
- Beclometasone Dipropionate Monohydrate EP Impurity U (CAS 79578-39-5)
- Hydrocortisone Impurity 28 (CAS CATO-C4X-140128)
- Beclometasone Dipropionate Monohydrate EP Impurity V (CAS 205105-83-5)
- Iloprost Impurity 8 (CAS CATO-C4X-32028)
- Dopamine Impurity 3 (CAS 89942-72-3)
- Edoxaban Impurity 37 (1R,2S,4R) (CAS CATO-C4X-106337)
- 4-Methylpyrazole-3-carboxylic Acid (CAS 82231-51-4)
- Basic Red 51 (CAS 12270-25-6)
- 33482-80-3 5,5-dimethyl-1,3-cyclohexadiene DTXSID10446677 (CAS 33482-80-3)
- 5'-Amino-[1,1':3',1''-terphenyl]-4',6'-dicarbonitrile (CAS 36337-28-7)
- (3-(1-(4-(Tert-butoxycarbonyl)piperazin-1-yl)ethyl)phenyl)boronic acid (CAS 1704096-32-1)
- 1-(3,4-Dimethoxy-5-nitrophenyl)ethanone (CAS 134610-32-5)
- Tirzepatide Impurity 10 (CAS CATO-C4X-324010)
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