Lefamulinum Impurity 35 CAS CATO-C4X-304735
| CAS No. | CATO-C4X-304735 |
| Molecular Formula | C22H32O5 |
| Molecular Weight | 376.49 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies Lefamulinum Impurity 35 (CAS CATO-C4X-304735), a pharmacopoeial impurity reference standard (molecular formula C22H32O5, MW 376.49 g/mol) used for the identification and quantification of trace impurities in APIs.
Based on its molecular formula C22H32O5, Lefamulinum Impurity 35 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 376.49 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).
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), Lefamulinum Impurity 35 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 | C22H32O5 |
| Molecular Weight | 376.49 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | ≥95% |
| Storage | Store at 2-8°C, 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) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
Related Lefamulinum Standards
- Lefamulinum Impurity 46 (CAS CATO-C4X-304746)
- Lefamulinum Impurity 21 (CAS CATO-C4X-304721)
- Lefamulinum Impurity 45 (CAS CATO-C4X-304745)
- Lefamulinum Impurity 47 (CAS CATO-C4X-304747)
- Lefamulinum Impurity 48 (CAS CATO-C4X-304748)
- Lefamulinum Impurity 5 (CAS CATO-C4X-30475)
- Lefamulinum Impurity 12 (CAS CATO-C4X-304712)
- Lefamulinum Impurity 13 (CAS CATO-C4X-304713)
Recommended Standards
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- Niraparib Impurity 45 (CAS 1476776-97-2)
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- Niraparib Impurity 20 (CAS CATO-C4X-232920)
- Finerenone Impurity 35 (CAS 1545905-35-8)
- Alcaftadine Impurity 1 (CAS 147083-93-0)
- Amlodipine Impurity 19 (CAS CATO-C4X-109519)
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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