Bupivacaine Impurity 13 CAS 51989-48-1
| CAS No. | 51989-48-1 |
| Molecular Formula | C14H20N2O2 |
| Molecular Weight | 248.32 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Based on its molecular formula C14H20N2O2, Bupivacaine Impurity 13 contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 248.32 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
CATO supplies Bupivacaine Impurity 13 (CAS 51989-48-1), a pharmacopoeial impurity reference standard (molecular formula C14H20N2O2, MW 248.32 g/mol) used for the identification and quantification of trace impurities in APIs.
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), Bupivacaine Impurity 13 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 | C14H20N2O2 |
| Molecular Weight | 248.32 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°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) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1971 |
| Nitrogen Atoms | 2 |
Related Bupivacaine Standards
- Bupivacaine Impurity 38 (CAS CATO-C4X-148238)
- Bupivacaine EP Impurity B (CAS 15883-20-2)
- Bupivacaine Impurity 41 (CAS 760928-28-7)
- Bupivacaine EP Impurity A (CAS 39627-98-0)
- Bupivacaine Impurity 33 (CAS 98626-61-0)
- Bupivacaine Impurity 34 (CAS 98348-30-2)
- Bupivacaine Impurity 32 (CAS 2199805-25-7)
- Bupivacaine EP Impurity C (CAS 1797894-80-4)
Recommended Standards
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- Loxoprofen Impurity 20 (CAS 83599-40-0)
- Neomycin Impurity 13 (CAS 58152-23-1)
- Cefepime Impurity 26 (CAS CATO-C4X-119326)
- Salicylic Acid Impurity 1 (CAS 89469-32-9)
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- Pancreatic Polypeptide (31-36) Free Acid, human (CAS 192432-73-8)
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