Eperisone Impurity 4 CAS 1026-87-5
| CAS No. | 1026-87-5 |
| Molecular Formula | C16H23NO |
| Molecular Weight | N/A |
| 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.
CATO supplies Eperisone Impurity 4 (CAS 1026-87-5), a pharmacopoeial impurity reference standard (molecular formula C16H23NOHCl, MW 281.82 g/mol) used for the identification and quantification of trace impurities in APIs.
Eperisone Impurity 4 (C16H23NOHCl) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, chlorine substitution. Halogen substitution raises its density and boiling point, its high carbon-to-hydrogen ratio confers good lipid solubility; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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 | C16H23NO HCl |
| Molecular Weight | 281.82 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
Related Eperisone Standards
- Eperisone Impurity 39 (CAS 1159693-74-9)
- Eperisone Impurity 50 (CAS 1160227-93-9)
- Eperisone Impurity 15 (CAS 119558-67-7)
- Eperisone Impurity 25 HCl (CAS 119651-20-6)
- Eperisone-d10 HCl (CAS 1246819-46-4)
- Eperisone Impurity 31 (CAS 163437-00-1)
- Eperisone Impurity 8 (CAS 163437-01-2)
- Eperisone Impurity 45 (CAS 1803849-49-1)
Recommended Standards
- Carbazochrome Impurity 11 (CAS CATO-C4X-229111)
- Flunarizine impurity 50 (CAS CATO-C4X-135750)
- Tocopherol impurity 37 (CAS 185672-33-7)
- 2,2,2-Trimethylacetamide (CAS 754-10-9)
- 2-Benzyl-1H,2H,3H,4H-benzo[b]1,6-naphthyridine (CAS 1541-57-7)
- 2-(Phenoxymethyl)pyrimidine-4-carbaldehyde (CAS 1131605-22-5)
- 1-(3-Hydroxyquinolin-6-yl)ethan-1-one (CAS 1956341-14-2)
- 2-Ethyl-N-methylpyrimidin-5-amine (CAS 1260809-68-4)
- 3-Amino-2,5,6-trimethyl-3h,4h-thieno[2,3-d]pyrimidin-4-one (CAS 80381-63-1)
- Peptide Impurity 05 (CAS 2322924-83-2)
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