Lamivudine EP Impurity E CAS 71-30-7
| CAS No. | 71-30-7 |
| Molecular Formula | C4H5N3O |
| Molecular Weight | 111.10 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 Lamivudine EP Impurity E.
As a process- or degradation-related impurity, Lamivudine EP Impurity E (CAS 71-30-7, C4H5N3O) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Lamivudine EP Impurity E (C4H5N3O) contains an amide group, a hydroxyl group, an ether linkage. Its physicochemical properties are representative of its class; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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.
As a certified reference material (CRM), Lamivudine EP Impurity E 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 | C4H5N3O |
| Molecular Weight | 111.10 g/mol |
| Purity | >95% |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1957 |
| Nitrogen Atoms | 3 |
Related Lamivudine Standards
- Lamivudine EP Impurity F (CAS 66-22-8)
- Lamivudine EP Impurity F-13C-15N2 (CAS 181517-11-3)
- Lamivudine Impurity 5 (CAS 2032-34-0)
- Lamivudine Impurity 17 (CAS 72702-38-6)
- Lamivudine EP Impurity I (CAS 145918-75-8)
- Lamivudine 5-monophosphate ammonium salt (CAS 1187058-40-7)
- Lamivudine 5-diphosphate ammonium salt (CAS 1187058-41-8)
- Lamivudine 5-triphosphate triethylammonium salt (CAS 1187058-42-9)
Recommended Standards
- Dapagliflozin Impurity 133 (CAS CATO-C4X-1138133)
- 2,4-Dihydroxypyridine (CAS 626-03-9)
- Pyrrole-2-carboxylicacid (CAS 634-97-9)
- Metronidazole impurity 23 (CAS CATO-C4X-140523)
- Avanafil Impurity 18 (CAS 211230-35-2)
- Naltrexone impurity 50 (CAS CATO-C4X-147550)
- Dequalinium Chloride EP Impurity B chloride (CAS 171980-52-2)
- 3-bromo-5,7-dichloro-1,6-naphthyridine (CAS 2629163-50-2)
- N-((1-methyl-1H-pyrazol-4-yl)methyl)cyclohexanamine (CAS 1049983-65-4)
- 4-Tert-butyl-n-(3-chloropropanoyl)benzamide (CAS 949393-09-3)
- (S)-N-(2-(1H-Indol-3-yl)ethyl)-2-amino-4-(methylthio)butanamide (CAS 655239-42-2)
- Penfluridol Impurity 2 (CAS CATO-C4X-35382)
- 3-(Isopropyl(tetrahydro-2H-thiopyran-3-yl)amino)propanoic acid (CAS 1491108-10-1)
- Tirzepatide Impurity 43 (CAS CATO-C4X-324043)
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