Lefamulinum Impurity 44 CAS CATO-C4X-304744
| CAS No. | CATO-C4X-304744 |
| Molecular Formula | C29H40O8S |
| Molecular Weight | 548.69 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
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.
Lefamulinum Impurity 44 (CAS CATO-C4X-304744) is a certified pharmaceutical impurity reference standard with the molecular formula C29H40O8S and a molecular weight of 548.69 g/mol.
Structurally, Lefamulinum Impurity 44 (C29H40O8S) contains a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, a polycyclic aromatic system. The molecule exhibits a degree of unsaturation (DBE) of 10.0, corresponding to approximately 10 ring(s) or double-bond equivalent(s). With a molecular weight of 548.69 g/mol, it falls into the moderately-high-molecular-weight range. 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).
As a certified reference material (CRM), Lefamulinum Impurity 44 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 | C29H40O8S |
| Molecular Weight | 548.69 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 |
| Degree of Unsaturation (DBE) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Sulfur Atoms | 1 |
Related Lefamulinum Standards
- Lefamulinum Impurity 11 (CAS CATO-C4X-304711)
- Lefamulinum Impurity 26 (CAS CATO-C4X-304726)
- Lefamulinum Impurity 36 (CAS CATO-C4X-304736)
- Lefamulinum Impurity 42 (CAS CATO-C4X-304742)
- Lefamulinum Impurity 1 (CAS CATO-C4X-30471)
- Lefamulinum Impurity 7 (CAS CATO-C4X-30477)
- Lefamulinum Impurity 17 (CAS CATO-C4X-304717)
- Lefamulinum Impurity 18 (CAS CATO-C4X-304718)
Recommended Standards
- Dicyclohexyl 2,2'-((((((2,2-dimethyl-2,3-dihydrobenzofuran-7-yl)oxy)carbonyl)(methyl)amino)thio)azanediyl)diacetate (CAS 82560-38-1)
- PBB No. 103 (CAS 59080-39-6)
- 3,3',4,5,5'-Pentabromobiphenyl (CAS 81902-33-2)
- 2,2',4,5,5'-Pentabromobiphenyl (CAS 67888-96-4)
- Crisaborole lmpurity 79 (CAS CATO-C4X-202179)
- Selexipag Impurity 68 (CAS CATO-C4X-196168)
- Brompheniramine Impurity 8 (CAS CATO-C4X-29988)
- 6-Fluoro-4-(trifluoromethyl)quinolin-2-amine (CAS 1116339-59-3)
- Methyl 4-chloro-3-(5,5-dimethyl-1,3,2-dioxaborinan-2-yl)benzoate (CAS 2096994-73-7)
- 1-Nonadecanoyl-2-hydroxy-sn-glycero-3-phosphocholine (CAS 108273-88-7)
- 6-Chloro-N-(2-((4-fluorobenzyl)thio)-2-methylpropyl)pyridazin-3-amine (CAS 339104-47-1)
- n-(2-Methylpropyl)cyclohexanamine hydrochloride (CAS 99863-04-4)
- Potassium Clavulanate EP Impurity J HCl (CAS 7677-21-6)
- Mast Cell Degranulating Peptide (CAS 83856-13-7)
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