Lemborexant impurity 12 CAS CATO-C4X-304212
| CAS No. | CATO-C4X-304212 |
| Molecular Formula | C20H21FO5S |
| Molecular Weight | 392.44 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies Lemborexant impurity 12 (CAS CATO-C4X-304212), a pharmacopoeial impurity reference standard (molecular formula C20H21FO5S, MW 392.44 g/mol) used for the identification and quantification of trace impurities in APIs.
Based on its molecular formula C20H21FO5S, Lemborexant impurity 12 contains a flavonoid core, a sulfone group, a hydroxyl group, an ether linkage, fluorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 392.44 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.
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C20H21FO5S |
| Molecular Weight | 392.44 g/mol |
| Purity | 97%+ |
| 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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Halogen Content | F-containing |
| Sulfur Atoms | 1 |
Related Lemborexant Standards
- Lemborexant impurity 10 (CAS CATO-C4X-304210)
- Lemborexant impurity 11 (CAS CATO-C4X-304211)
- Lemborexant impurity 17 (CAS 1450904-92-3)
- Lemborexant Impurity 30 (CAS CATO-C4X-304230)
- Lemborexant Impurity 46 (CAS CATO-C4X-304246)
- Lemborexant Impurity 51 (CAS CATO-C4X-304251)
- Lemborexant impurity 9 (CAS 1369763-94-9)
- Lemborexant Impurity 77 (CAS CATO-C4X-304277)
Recommended Standards
- Hybutimibe Impurity 1 (CAS CATO-C4X-25051)
- Acrolein, DAIH derivative (CAS 101611-80-7)
- Latamoxef Impurity 20 (CAS CATO-C4X-179820)
- Ambrisentan Methyl Ester (CAS 1106685-61-3)
- Dotinurad Impurity 75 (CAS 24526-98-5)
- Torasemide impurity 39 (CAS CATO-C4X-183639)
- Tamsulosin Impurity 43 (CAS CATO-C4X-118743)
- 5-(Tert-butyl) 3-ethyl 1-(2-hydroxyethyl)-1,4,6,7-tetrahydro-5H-pyrazolo[4,3-c]pyridine-3,5-dicarboxylate (CAS 1884456-65-8)
- Tert-butyl ((2-bromothiophen-3-yl)methyl)carbamate (CAS 910036-94-1)
- tert-Butyl (3-Isothiocyanatopropyl)carbamate (CAS 286955-45-1)
- 4-(1,2,2-Triphenylvinyl)benzimidamide (CAS 2734780-03-9)
- Phenylmethanethiosulfonate (CAS 1197-26-8)
- Ethyl (1E)-N-(4-amino-1,2,5-oxadiazol-3-yl)-ethanimidoate (CAS 1256633-10-9)
- Semaglutide impurity 211 (CAS CATO-C4X-2226211)
Why CATO?
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