Phentolamine Impurity 23 CAS CATO-C4X-224723
| CAS No. | CATO-C4X-224723 |
| Molecular Formula | C17H19N3O |
| Molecular Weight | N/A |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
This reference standard supports related-substances testing and method development in line with ICH Q3A/Q3B guidance on impurity control, and is suitable for system suitability testing and forced-degradation studies.
CATO supplies Phentolamine Impurity 23 (CAS CATO-C4X-224723), a pharmacopoeial impurity reference standard (molecular formula C17H19N3OHCl, MW 317.82 g/mol) used for the identification and quantification of trace impurities in APIs.
Phentolamine Impurity 23 (C17H19N3OHCl) contains a steroid core, 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 | C17H19N3O HCl |
| Molecular Weight | 317.82 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 DMSO, DMF, methanol |
| 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 | 3 |
Related Phentolamine Standards
- Phentolamine Mesilate Impurity 6 (CAS 13338-49-3)
- Phentolamine-d4 HCl (Regitine-d4 HCl) (CAS 1346599-65-2)
- Phentolamine Mesilate EP Impurity A (CAS 2724727-52-8（free base）)
- Phentolamine Impurity 8 (CAS 2767988-83-8)
- Phentolamine Impurity 9 (CAS 4284-47-3)
- Phentolamine (CAS 50-60-2)
- Phentolamine Impurity 17 (CAS 57182-48-6)
- Phentolamine Mesilate EP Impurity C (CAS 61537-49-3)
Recommended Standards
- Empagliflozin impurity 247 (CAS CATO-C4X-1065247)
- Cefpodoxime impurity 69 (CAS CATO-C4X-157969)
- Vazegepant Impurity 42 (CAS CATO-C4X-320042)
- N-Desmethyl Ecopipam (CAS 129672-23-7)
- 2-Amino-N-(((S)-1-benzylpiperidin-2-yl)methyl)-N-isopropyl-3-methylbutanamide (CAS 1354024-14-8)
- methyl 2-amino-3-bromo-1,7-naphthyridine-6-carboxylate (CAS 2691881-61-3)
- 5-Iodo-6-methyl-4-oxo-1,4-dihydropyridine-3-carboxylic acid (CAS 244638-94-6)
- (2Z)-2-[3-Chloro-5-(trifluoromethyl)pyridin-2-yl]-3-(dimethylamino)prop-2-enal (CAS 339010-44-5)
- Ethyl 3-bromo-2-oxoheptanoate (CAS 13088-52-3)
- Tirzepatide Impurity 38 (CAS CATO-C4X-324038)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
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- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com