Vardenafil Impurity 40 CAS CATO-C4X-101740
| CAS No. | CATO-C4X-101740 |
| Molecular Formula | C23H30N6O5S |
| Molecular Weight | 502.59 g/mol |
| 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 Vardenafil Impurity 40 (CAS CATO-C4X-101740), a pharmacopoeial impurity reference standard (molecular formula C23H30N6O5S, MW 502.59 g/mol) used for the identification and quantification of trace impurities in APIs.
Owing to a flavonoid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage, Vardenafil Impurity 40 is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 502.59 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).
CATO manufactures Vardenafil Impurity 40 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 | C23H30N6O5S |
| Molecular Weight | 502.59 g/mol |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°C), protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 6 |
| Sulfur Atoms | 1 |
Related Vardenafil Standards
- Vardenafil Impurity 43 (CAS CATO-C4X-101743)
- Vardenafil Impurity 38 (CAS 224787-06-8)
- Vardenafil Impurity 41 (CAS CATO-C4X-101741)
- Vardenafil Impurity 42 (CAS CATO-C4X-101742)
- Vardenafil Impurity 3 (CAS 224785-98-2)
- Vardenafil USP Related Compound D (CAS 448184-48-3)
- Vardenafil Impurity N1 (CAS 448184-56-3)
- Vardenafil Impurity 33 (CAS CATO-C4X-101733)
Recommended Standards
- Undecaethylene Glycol (CAS 6809-70-7)
- N'-((1,3-Diphenyl-1H-pyrazol-4-yl)methylene)-3-methyl-1-phenyl-1H-thieno[2,3-c]pyrazole-5-carbohydrazide (CAS 402840-88-4)
- Fluticasone Propionate EP Impurity E (CAS 105613-90-9)
- Ertapenem Impurity 55 (CAS CATO-C4X-163355)
- Dorzolamide Impurity 18 Disodium Salt (Mixture of Diastereomers) (CAS CATO-C4X-122818)
- Cefcapene Impurity 31 (CAS 63626-54-0)
- Rimegepant Impurity 69 (CAS CATO-C4X-248769)
- 4-(1-methyl-1h-pyrazol-4-yl)but-3-yn-1-ol (CAS 1183048-31-8)
- 1-[(1-methyl-1H-pyrrol-3-yl)sulfonyl]piperidine-4-carboxylic acid (CAS 940271-54-5)
- N-(tert-Butyl)-3-chloro-5-(trifluoromethyl)-2-pyridinamine (CAS 1220037-10-4)
- Ethylene diamine tetraacetic acid ferric sodium salt trihydrate (CAS 2489531-02-2)
- 5,6,7,8-Tetrahydroimidazo[1,5-a]pyrazine dihydrochloride (CAS 165894-10-0)
- 2-Bromo-4-(trifluoromethoxy)benzoic acid (CAS 1138331-74-4)
- Des-Gln24-Tirzepatide (CAS CATO-CPTD788949)
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