Terbinafine Impurity 37 CAS CATO-C4X-133837
| CAS No. | CATO-C4X-133837 |
| Molecular Formula | C21H25N |
| Molecular Weight | N/A |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Terbinafine Impurity 37 (C21H25NHCl) contains a nitrogen-containing heterocyclic scaffold, a nitrile group, 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 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 process- or degradation-related impurity, Terbinafine Impurity 37 (CAS CATO-C4X-133837, C21H25NHCl) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
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 Terbinafine Impurity 37 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 | C21H25N HCl |
| Molecular Weight | 327.90 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
Related Terbinafine Standards
- Terbinafine Hydroxy Benzoate (CAS 1076198-30-5)
- Terbinafine Carboxylic Acid Methyl Ester (Oxalate) (CAS 1076199-76-2)
- Terbinafine Impurity 4 (Mixture of Z and E Isomers) (CAS 114311-70-5)
- Terbinafine Impurity 5-d7 (CAS 1185238-58-7)
- Terbinafine-d7 Hydrochloride (CAS 1185240-27-0)
- Terbinafine Impurity 4 (CAS 125660-64-2)
- Terbinafine Impurity 10 (CAS 126764-17-8)
- Terbinafine-d3 HCl (N-methyl-d3) (CAS 1310012-15-7)
Recommended Standards
- Cefuroxime Impurity 111 (CAS CATO-C4X-1245111)
- Teprenone Impurity 29 (CAS CATO-C4X-208129)
- Olmesartan impurity 88 (CAS CATO-C4X-109788)
- N-Methylthiomorpholine-4-carboxamide (CAS 72662-49-8)
- Piperazine adipate (CAS 142-88-1)
- (4-(((4,5-Dihydrothiazol-2-yl)thio)methyl)piperidin-1-yl)(thiophen-2-yl)methanone (CAS 1396631-11-0)
- 6,6'-Dimethyl-[1,1'-biphenyl]-2,2'-diol (CAS 32750-01-9)
- Ethylene thiourea D4 (CAS 352431-28-8)
- tert-Butyl 2-(6-bromo-5-methyl-2,4-dioxo-1,4-dihydrothieno[2,3-d]pyrimidin-3(2H)-yl)-2-methylpropanoate (CAS 1434643-33-0)
- Des-Trp25-Tirzepatide (CAS CATO-CPTD788948)
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