Sildenafil Impurity 34 CAS CATO-C4X-112834
| CAS No. | CATO-C4X-112834 |
| Molecular Formula | C9H10O5S |
| Molecular Weight | 230.24 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.
Sildenafil Impurity 34 (CAS CATO-C4X-112834) is a certified pharmaceutical impurity reference standard with the molecular formula C9H10O5S and a molecular weight of 230.24 g/mol.
Owing to a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system, Sildenafil Impurity 34 is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 230.24 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).
As a certified reference material (CRM), Sildenafil Impurity 34 meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C9H10O5S |
| Molecular Weight | 230.24 g/mol |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°C), keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Sulfur Atoms | 1 |
Related Sildenafil Standards
- Sildenafil Impurity 247 (CAS 360068-47-9)
- Sildenafil Impurity N6 (CAS 1004455-71-3)
- Sildenafil Impurity N1 (CAS 911715-34-9)
- Sildenafil Impurity SM2 (CAS 202066-14-6)
- Sildenafil Impurity N5 (CAS 60531-34-2)
- Sildenafil Impurity 76 (CAS 97-05-2)
- Sildenafil Impurity 53 (CAS 2021224-02-0)
- Sildenafil RC 41 (CAS 222729-55-7)
Recommended Standards
- 30211-77-9 O5VCA1GS5O 2-Nitro-5-thiocyanobenzoic acid Benzoic acid, 2-nitro-5-thiocyanato- 2-Nitro-5-thiocyanatobenzoic acid EINECS 250-093-9 UNII-O5VCA1GS5O (CAS 30211-77-9)
- Lamivudine EP Impurity J (CAS 145986-07-8)
- 273384-72-8 N-(4-Aminophenyl)-2-fluorobenzamide (CAS 273384-72-8)
- Cefuroxime impurity 103 (CAS CATO-C4X-1245103)
- Budesonide Impurity 72 (CAS CATO-C4X-138972)
- Ruxolitinib impurity 50 (CAS CATO-C4X-205850)
- Semaglutide Impurity 144 (CAS 394210-59-4)
- 1-(3,5-Dichlorophenyl)-2-(4-fluorophenyl)ethan-1-amine hydrochloride (CAS 2138041-91-3)
- 1-(3-Iodophenyl)pyrrolidine-2,5-dione (CAS 72601-46-8)
- (4-(Tert-butyl)phenyl)(4-(5-chloro-2-methylphenyl)piperazin-1-yl)methanone (CAS 693800-01-0)
- 4-((4-Hydrazinylphthalazin-1-yl)methyl)morpholine (CAS 91214-62-9)
- 2-(3-Chlorobenzo[b]thiophen-2-yl)-5-(chloromethyl)-1,3,4-oxadiazole (CAS 924164-79-4)
- N-(1H-Indazol-6-yl)furan-2-carboxamide (CAS 110326-95-9)
- D-Tyr10-Tirzepatide (CAS CATO-CPTD788922)
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