Bupivacaine Impurity 43 CAS CATO-C4X-148243
| CAS No. | CATO-C4X-148243 |
| Molecular Formula | C18H28N2O |
| Molecular Weight | N/A |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Bupivacaine Impurity 43 (CAS CATO-C4X-148243) is a certified pharmaceutical impurity reference standard with the molecular formula C18H28N2OHCl and a molecular weight of 324.89 g/mol.
Bupivacaine Impurity 43 (C18H28N2OHCl) contains a steroid core, an amide group, a hydroxyl group, an ether linkage, chlorine substitution. Halogen substitution raises its density and boiling point, its high carbon-to-hydrogen ratio confers good lipid solubility; 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).
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), Bupivacaine Impurity 43 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 | C18H28N2O HCl |
| Molecular Weight | 324.89 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor) |
| Purity | ≥95% |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
Related Bupivacaine Standards
- Bupivacaine EP Impurity D (CAS 1037184-07-8)
- Bupivacaine Impurity 44 (CAS 104485-01-0)
- Bupivacaine-D9 Hydrochloride (CAS 1286973-34-9)
- Bupivacaine EP Impurity E (CAS 1330172-81-0)
- Bupivacaine N-Oxide (CAS 1346597-81-6)
- Bupivacaine-d9 N-Oxide (CAS 1346598-03-5)
- Bupivacaine Hydrochloride (CAS 14252-80-3)
- Bupivacaine Impurity 20 (CAS 15116-13-9)
Recommended Standards
- Mirogabalin Impurity 165 (CAS CATO-C4X-2924165)
- Apremilast Impurity 44 (CAS 2096492-44-1)
- N-Nitroso Piperacillin impurity 103 (CAS CATO-C4X-1732103)
- (R)-N-(1-(2-Chloroacetyl)pyrrolidin-3-yl)-N-methylacetamide (CAS 1354001-45-8)
- 4-(3,4-Dimethoxyphenyl)-6-phenyl-2-(piperidin-1-yl)pyrimidine (CAS 5341-53-7)
- Pimecrolimus Impurity 12 (CAS CATO-C4X-173112)
- 1-(Dibromomethyl)anthracene-9,10-dione (CAS 91323-96-5)
- Methyl 8-hydroxyindolizine-7-carboxylate (CAS 1467669-04-0)
- Sodium 2-(6-methylpyridin-2-yl)acetate (CAS 1416351-80-8)
- Fibrinopeptide A, human TFA (CAS 61533-47-9)
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