Bupivacaine Impurity 9 CAS CATO-C4X-14829
| CAS No. | CATO-C4X-14829 |
| Molecular Formula | C22H37N2O |
| Molecular Weight | N/A |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Bupivacaine Impurity 9 (CAS CATO-C4X-14829) is a certified pharmaceutical impurity reference standard with the molecular formula C22H37N2OBr and a molecular weight of 425.45 g/mol.
Owing to a steroid core, an amide group, a hydroxyl group, an ether linkage, bromine substitution, Bupivacaine Impurity 9 is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 425.45 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
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 9 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 | C22H37N2O Br |
| Molecular Weight | 425.45 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor) |
| Purity | 97%+ |
| Storage | Store at room temperature, 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 | Br-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
- Bempedoic Acid Impurity 18 (CAS CATO-C4X-218918)
- Resmetirom impurity 121 (CAS CATO-C4X-2912121)
- Rifapentine impurity 23 (CAS CATO-C4X-195923)
- Methyl 2-(chloromethyl)-6-methylisonicotinate (CAS 1393555-09-3)
- 5-Chloro-1-(3-chlorophenyl)-3-propyl-1H-pyrazole-4-carbaldehyde (CAS 1152960-82-1)
- 2-Cyano-N,N-dipropylacetamide (CAS 53807-35-5)
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- 5-cis,8-cis,11-cis-Eicosatrienoic acid (CAS 20590-32-3)
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- Neuropeptide GE (CAS 134748-04-2)
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