Etoposide EP Impurity L CAS 40505-27-9
| CAS No. | 40505-27-9 |
| Molecular Formula | C21H20O8 |
| Molecular Weight | 400.38 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Based on its molecular formula C21H20O8, Etoposide EP Impurity L contains a flavonoid core, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 400.38 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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).
Etoposide EP Impurity L (CAS 40505-27-9) is a certified pharmaceutical impurity reference standard with the molecular formula C21H20O8 and a molecular weight of 400.38 g/mol.
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.
CATO manufactures Etoposide EP Impurity L under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C21H20O8 |
| Molecular Weight | 400.38 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| 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 |
| Degree of Unsaturation (DBE) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1968 |
Related Etoposide Standards
- Etoposide Impurity 29 (CAS CATO-C4X-202429)
- Etoposide EP Impurity E (CAS 6559-91-7)
- Etoposide EP Impurity P (CAS 117669-31-5)
- Etoposide EP Impurity J (CAS 118356-05-1)
- Etoposide EP Impurity M (CAS 518-28-5)
- Etoposide EP Impurity Q (CAS 153975-26-9)
- Etoposide Impurity 25 (CAS CATO-C4X-202425)
- Etoposide Impurity 35 (CAS CATO-C4X-202435)
Recommended Standards
- Daunorubicin EP Impurity E (CAS 28008-51-7)
- Minocycline impurity 75 (CAS 803616-67-3)
- Methotrexate Impurity 35 (CAS CATO-C4X-115435)
- 3-(1-Methyl-1H-indol-3-yl)-4-(1-methyl-6-nitro-1H-indol-3-yl)-1H-pyrrole-2,5-dione (CAS 125313-92-0)
- Abemaciclib Impurity 80 (CAS CATO-C4X-293780)
- Flunarizine Impurity 9 (CAS 87179-40-6)
- Pranoprofen Impurity 61 (CAS CATO-C4X-181161)
- Methyl 5-(2-chlorophenyl)-1h-pyrazole-3-carboxylate (CAS 1187339-06-5)
- 2-Amino-N-cyclopropyl-N-((1-methylpiperidin-2-yl)methyl)acetamide (CAS 1353955-66-4)
- 3-[(3-aminopyridin-4-yl)sulfanyl]propan-1-ol (CAS 1095514-79-6)
- Rupatadine Impurity 4 (CAS 1235342-53-6)
- N-(1,3-dioxo-1H,3H-benzo[de]isochromen-6-yl)acetamide (CAS 26558-91-8)
- 2-[1-(1-Cyclohexen-1-yl)ethenyl]-4,4,5,5-tetramethyl-1,3,2-dioxaborolane (CAS 306775-14-4)
- Cholecystokinin Octapeptide (desulfated) (CAS 25679-24-7)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com