Bupivacaine Impurity 40 CAS CATO-C4X-148240
| CAS No. | CATO-C4X-148240 |
| Molecular Formula | C20H33N2O |
| Molecular Weight | N/A |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
As a process- or degradation-related impurity, Bupivacaine Impurity 40 (CAS CATO-C4X-148240, C20H33N2OI) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
The molecular framework of Bupivacaine Impurity 40 (C20H33N2OI) is characterized by a steroid core, an amide group, a hydroxyl group, an ether linkage, iodine substitution. In reversed-phase chromatography, its retention is governed primarily by its high hydrophobicity (logP), which provides a practical basis for HPLC-UV/DAD or LC-MS method development. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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.
Physical & Chemical Properties
| Molecular Formula | C20H33N2O I |
| Molecular Weight | 444.40 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 | I-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
- Tofacitinib Impurity 42 (CAS CATO-C4X-107942)
- Dapagliflozin Impurity 41 (CAS 1079083-63-8)
- Cefcapene Impurity 96 (CAS CATO-C4X-182496)
- Clindamycin 2,3-Dipalmitate (CAS CATO-C4X-134178)
- 1-Ethyl-5-methyl-1H-pyrazole-3-carbaldehyde (CAS 1152617-43-0)
- (4-Bromomethyl-phenyl)-methyl-carbamic acid tert-butyl ester (CAS 168830-93-1)
- 4-Cyano-5-(2-cyanoacetamido)-N,N-diethyl-3-methylthiophene-2-carboxamide (CAS 581780-63-4)
- 2-(1H-imidazol-1-yl)-1-phenylethanamine (CAS 24169-72-0)
- Cefdinir Impurity 82 (CAS 2489663-67-2)
- Semaglutide Impurity 128 (CAS 2490269-78-6)
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