Etizolam Impurity 15 CAS 51687-58-2
| CAS No. | 51687-58-2 |
| Molecular Formula | C15H14ClNO2S |
| Molecular Weight | 307.80 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Etizolam Impurity 15 (CAS 51687-58-2) is a certified pharmaceutical impurity reference standard with the molecular formula C15H14ClNO2S and a molecular weight of 307.80 g/mol.
Structurally, Etizolam Impurity 15 (C15H14ClNO2S) contains a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage, chlorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 9.0, corresponding to approximately 9 ring(s) or double-bond equivalent(s). With a molecular weight of 307.80 g/mol, it falls into the moderately-high-molecular-weight range. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
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 Etizolam Impurity 15 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 | C15H14ClNO2S |
| Molecular Weight | 307.80 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| 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) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1971 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related Etizolam Standards
- Etizolam Impurity 20 (CAS 50508-61-7)
- Etizolam Impurity 8 (CAS 54123-29-4)
- Etizolam Impurity 7 (CAS 91663-72-8)
- Etizolam Impurity 27 (CAS CATO-C4X-350927)
- Etizolam Impurity 12 (CAS 67727-22-4)
- Etizolam Impurity 31 (CAS CATO-C4X-350931)
- Etizolam Impurity 32 (CAS CATO-C4X-350932)
- Etizolam Impurity 9 (CAS 40054-68-0)
Recommended Standards
- (R)-Clopidogrel Carboxylic Acid (CAS 324757-50-8)
- tert-Butyl 4-(4-chlorophenyl)-3-methyl-5,6-dihydropyridine-1(2H)-carboxylate (CAS 1108154-56-8)
- rac-Clopidogrel EP Impurity A (CAS 90055-55-3)
- (E)-5-(2-((3-chlorophenyl)amino)vinyl)-3-(methylthio)isothiazole-4-carbonitrile (CAS 1164507-55-4)
- Verapamil EP Impurity A (CAS 141991-88-0)
- Maribavir Impurity 15 (CAS 176161-19-6)
- Citalopram Impurity 21 (CAS 1433278-32-0)
- 2-Bromo-N-ethyl-4-(trifluoromethoxy)benzenesulfonamide (CAS 957062-74-7)
- 2-(Diphenylphosphino)-6-(tert-pentyl)pyridine (CAS 947315-18-6)
- Hyoscine Butylbromide EP Impurity F Iodine (CAS CATO-C4X-195812)
- 1-(4-Methoxyphenyl)-1,2-ethanediol (CAS 13603-63-9)
- 2,2-Di(1H-indol-3-yl)ethan-1-ol (CAS 95331-90-1)
- 1-(1-methylcyclopropyl)sulfonylazetidin-3-ol (CAS 1187594-25-7)
- Neuroendocrine Regulatory Peptide-1 (rat) (CAS 954420-51-0)
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