Lefamulinum Impurity 18 CAS CATO-C4X-304718
| CAS No. | CATO-C4X-304718 |
| Molecular Formula | C28H45NO6S |
| Molecular Weight | 523.73 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of Lefamulinum Impurity 18 is closely related to a steroid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
Lefamulinum Impurity 18 (CAS CATO-C4X-304718) is a certified pharmaceutical impurity reference standard with the molecular formula C28H45NO6S and a molecular weight of 523.73 g/mol.
Structurally, Lefamulinum Impurity 18 (C28H45NO6S) contains a steroid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 7.0, corresponding to approximately 7 ring(s) or double-bond equivalent(s). With a molecular weight of 523.73 g/mol, it falls into the moderately-high-molecular-weight range. 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.
CATO manufactures Lefamulinum Impurity 18 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 | C28H45NO6S |
| Molecular Weight | 523.73 g/mol |
| Purity | 90% |
| 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) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related Lefamulinum Standards
- Lefamulinum Impurity 17 (CAS CATO-C4X-304717)
- Lefamulinum Impurity (CAS CATO-C4X-304728)
- Lefamulinum Impurity 29 (CAS CATO-C4X-304729)
- Lefamulinum Impurity 3 (CAS CATO-C4X-30473)
- Lefamulinum Impurity 4 (CAS CATO-C4X-30474)
- Lefamulinum Impurity 15 (CAS CATO-C4X-304715)
- Lefamulinum Impurity 20 (CAS CATO-C4X-304720)
- Lefamulinum Impurity 30 (CAS CATO-C4X-304730)
Recommended Standards
- 4-(2-(Di-tert-butylphosphino)phenyl)-4,5,8,9,10,11,12,13,14,15-decahydro-3H-dinaphtho[2,1-c:1',2'-e]azepine (CAS 2769700-25-4)
- 2-((3-Cyano-4-phenyl-6-(p-tolyl)pyridin-2-yl)thio)-N,N-dicyclohexylacetamide (CAS 332171-11-6)
- (S)-Edelfonise (CAS 83542-43-2)
- 6-(4-Aminophenethyl)-3-((2-(tert-Butyl)-4-(hydroxymethyl)-5-methylphenyl)thio)-6-cyclohexyl-4-hydroxy-5,6-dihydro-2H-pyran-2-one (CAS 197915-48-3)
- Deoxycholic acid Impurity 44 (CAS CATO-C4X-335944)
- Phytomenadione/Vitamin K1 Impurity 97 (CAS CATO-C4X-220797)
- Dydrogesterone Impurity 15 (CAS 32164-74-2)
- Dimethyl (2R,4S)-1-benzylazetidine-2,4-dicarboxylate (CAS 121049-90-9)
- 4-(((2,5-Dimethylphenyl)sulfonamido)methyl)benzoic acid (CAS 690646-14-1)
- 2-(Aminomethyl)-3-(difluoromethyl)-4-methoxy-6-(trifluoromethyl)pyridine (CAS 1361920-15-1)
- 1-(2,4-dinitrophenyl)piperidine (CAS 839-93-0)
- 3-Methyl-1-(pyrrolidin-1-yl)butan-2-amine (CAS 1020937-75-0)
- 1-(5-Bromopyridin-3-yl)cyclopropanecarboxylic acid (CAS 1255871-41-0)
- Calcineurin Autoinhibitory Peptide (CAS 148067-21-4)
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