Phentolamine Impurity 22 CAS CATO-C4X-224722
| CAS No. | CATO-C4X-224722 |
| Molecular Formula | C21H25N5O |
| Molecular Weight | N/A |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Owing to a steroid core, an amide group, a hydroxyl group, an ether linkage, chlorine substitution, Phentolamine Impurity 22 is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 399.92 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
Phentolamine Impurity 22 (CAS CATO-C4X-224722) is a certified pharmaceutical impurity reference standard with the molecular formula C21H25N5OHCl and a molecular weight of 399.92 g/mol.
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 manufactures Phentolamine Impurity 22 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 | C21H25N5O 2*HCl |
| Molecular Weight | 399.92 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) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 5 |
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
- Dorzolamide N-Desethyl N-Acetyl Impurity (CAS 147200-03-1)
- Zopiclone Impurity 19 (CAS CATO-C4X-123819)
- Gemcitabine Impurity 14 (CAS 294177-31-4)
- N1-(4-methylbenzyl)ethane-1,2-diamine (CAS 99167-06-3)
- 1-(5-(3-Fluorophenyl)-1,3,4-oxadiazol-2-yl)ethan-1-amine hydrochloride (CAS 1417634-60-6)
- Venetoclax Impurity 140 (CAS CATO-C4X-2495140)
- trans-3-(4-Methoxyphenoxy)cyclobutanamine hydrochloride (CAS 1630906-53-4)
- 5-Sulfanylidene-2H,3H,5H,6H-imidazo[1,2-c]quinazolin-2-one (CAS 188250-53-5)
- 2-Chloro-5-((2-methylpiperidin-1-yl)methyl)thiazole (CAS 478064-78-7)
- Semaglutide Impurity 152 xTFA (CAS CATO-C4X-2226152)
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