Etoposide Impurity 28 CAS CATO-C4X-202428
| CAS No. | CATO-C4X-202428 |
| Molecular Formula | C35H32Cl6O16 |
| Molecular Weight | 921.34 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including Etoposide Impurity 28.
CATO supplies Etoposide Impurity 28 (CAS CATO-C4X-202428), a pharmacopoeial impurity reference standard (molecular formula C35H32Cl6O16, MW 921.34 g/mol) used for the identification and quantification of trace impurities in APIs.
Owing to a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution, a polycyclic aromatic system, Etoposide Impurity 28 is typically pale yellow to yellow amorphous powder. Its solid-state physicochemical attributes — including a molecular weight of 921.34 g/mol — guide the selection of appropriate sample preparation and analytical techniques. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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 28 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 | C35H32Cl6O16 |
| Molecular Weight | 921.34 g/mol |
| 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) | 17.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Halogen Content | Cl-containing |
Related Etoposide Standards
- Etoposide Impurity 33 (CAS CATO-C4X-202433)
- Etoposide EP Impurity R (CAS 149839-65-6)
- Etoposide EP Impurity N (CAS CATO-C4X-202414)
- Etoposide Impurity 37 (CAS CATO-C4X-202437)
- Etoposide impurity 20 (CAS CATO-C4X-202420)
- Etoposide Impurity 32 (CAS CATO-C4X-202432)
- Etoposide EP Impurity O (CAS 260974-95-6)
- Etoposide Impurity 39 (CAS CATO-C4X-202439)
Recommended Standards
- 2,2,4,4,6,6-Hexakis(2,2,3,3-tetrafluoropropoxy)-2λ5,4λ5,6λ5-1,3,5,2,4,6-triazatriphosphorine (CAS 58943-98-9)
- Bis(4-((4-(dodecyloxy)benzoyl)oxy)phenyl) heptanedioate (CAS 765954-11-8)
- N1,N1'-(1,4-Phenylene)bis(N1-(4-(diisobutylamino)phenyl)-N4,N4-diisobutylbenzene-1,4-diamine) (CAS 485831-34-3)
- RMC6236 Intermediate 3 (CAS 3050725-59-9)
- Remdesivir Impurity 22 (CAS 2096985-18-9)
- Avanafil Impurity 106 (CAS CATO-C4X-1118106)
- Olprinone Impurity 5 (CAS 141354-29-2)
- (3S,5S)-5-((tert-Butyldimethylsilyl)oxy)piperidin-3-ol (CAS 1792185-02-4)
- 5-Amino-1H-isochromen-1-one (CAS 70758-25-7)
- 2-Benzyl-5-chloro-1,2-dihydro-3H-1,2,4-triazol-3-one (CAS 22354-89-8)
- D-Glucose-6-13C (CAS 106032-62-6)
- 1,3,4,6,8,13-Hexahydroxy-10,11-dimethyl-2,5-di(piperidin-2-yl)phenanthro[1,10,9,8-opqra]perylene-7,14-dione (CAS 72393-03-4)
- N-(2-Methoxyphenyl)-3-(pyrazin-2-yl)-1,2,4-oxadiazole-5-carboxamide (CAS 1219902-55-2)
- Tirzepatide Impurity 21 X TFA Salt (CAS CATO-C4X-324021)
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