Etoposide Impurity 23 CAS 101648-63-9
| CAS No. | 101648-63-9 |
| Molecular Formula | C20H20Cl4O10 |
| Molecular Weight | 562.18 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 562.18 g/mol gives Etoposide Impurity 23 distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
CATO supplies Etoposide Impurity 23 (CAS 101648-63-9), a pharmacopoeial impurity reference standard (molecular formula C20H20Cl4O10, MW 562.18 g/mol) used for the identification and quantification of trace impurities in APIs.
Etoposide Impurity 23 (C20H20Cl4O10) contains a flavonoid core, a hydroxyl group, an ether linkage, chlorine substitution. Halogen substitution raises its density and boiling point, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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.
As a certified reference material (CRM), Etoposide Impurity 23 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 | C20H20Cl4O10 |
| Molecular Weight | 562.18 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | >95% |
| Storage | Store at room temperature, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1986 |
| Halogen Content | Cl-containing |
Related Etoposide Standards
- Etoposide EP Impurity D (CAS 23363-35-1)
- Etoposide 3,4-Quinone (CAS 105016-65-7)
- Etoposide impurity 22 (CAS 153975-25-8)
- Etoposide Impurity 30 (CAS CATO-C4X-202430)
- Etoposide (CAS 33419-42-0)
- Etoposide EP Impurity B (CAS 100007-56-5)
- Etoposide EP Impurity C (CAS 100007-53-2)
- Etoposide EP Impurity I (CAS 111712-42-6)
Recommended Standards
- Thymidine 5-Triphosphate, 3-Phosphate (CAS 1015762-49-8)
- 3-Perfluorooctyl-5-phenylpyrazole (CAS 1029650-61-0)
- Indometacin Farnesil (CAS 85801-02-1)
- 3-Perfluorooctyl-2-hydroxypropyl methacrylate (CAS 93706-76-4)
- Benzbromarone Impurity 32 (CAS CATO-C4X-225032)
- Methocarbamol Impurity 10 (CAS 85536-84-1)
- Afatinib Impurity 48 (CAS 3005278-77-0)
- D-Asp9-Tirzepatide (CAS CATO-CPTD788923)
- 4-Ethyl-N-(4-methoxyphenyl)benzamide (CAS 212209-97-7)
- 2-(2-Fluorophenyl)-3H-imidazo[4,5-c]pyridine methanesulfonate (CAS 1221449-52-0)
- (2,3-Dihydrothieno[3,4-b][1,4]dioxin-5-yl)(phenyl)methanol (CAS 1284059-61-5)
- Indometacin EP Impurity G (CAS 402849-26-7)
- N-deshydroxyethyl Oxetacaine (CAS 51166-74-6)
- Peptide Impurity (CAS CATO-CPTD788810)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
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- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com