Sildenafil Impurity 41 CAS 304435-83-4
| CAS No. | 304435-83-4 |
| Molecular Formula | C10H17N3O2 |
| Molecular Weight | 211.26 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Structurally, Sildenafil Impurity 41 (C10H17N3O2) contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 4.0, corresponding to approximately 4 ring(s) or double-bond equivalent(s). With a molecular weight of 211.26 g/mol, it falls into the medium-molecular-weight range. 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).
CATO supplies Sildenafil Impurity 41 (CAS 304435-83-4), a pharmacopoeial impurity reference standard (molecular formula C10H17N3O2, MW 211.26 g/mol) used for the identification and quantification of trace impurities in APIs.
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 Sildenafil Impurity 41 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 | C10H17N3O2 |
| Molecular Weight | 211.26 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (faint amine-like odor) |
| Purity | >95% |
| Storage | Store at 2-8°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) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Nitrogen Atoms | 3 |
Related Sildenafil Standards
- Sildenafil RC 39 (CAS 1346605-36-4)
- Sildenafil Impurity 35 (CAS 139756-01-7)
- Sildenafil Impurity 59 (CAS 792969-85-8)
- Sildenafil Impurity N23 (CAS 247583-72-8)
- Sildenafil RC 41 (CAS 222729-55-7)
- Sildenafil Impurity 36 (CAS 139756-00-6)
- Sildenafil Impurity 274 (CAS 1358966-40-1)
- Sildenafil Impurity 56 (CAS CATO-C4X-112856)
Recommended Standards
- Rabeprazole Impurity 41 (CAS 117977-18-1)
- Oxcarbazepine Impurity 27 (CAS 4014-77-1)
- Ezetimibe Impurity 69 (CAS 6744-65-6)
- Perindopril EP Impurity L (CAS 111836-22-7)
- Lasmiditan Impurity 56 (CAS CATO-C4X-247856)
- Finerenone Impurity 231 (CAS CATO-C4X-2880231)
- Semaglutide Impurity 189 (CAS CATO-C4X-2226189)
- 5,8-Difluoro-1,2,3,4-tetrahydronaphthalen-1-amine (CAS 907973-51-7)
- [5,5′-Bis(trifluoromethyl)-2,2′-bipyridine-κN1,κN1′]bis[3,5-difluoro-2-(5-methyl-2-pyridinyl-κN)phenyl-κC]-, (OC-6-33)-Iridium(1+), hexafluorophosphate(1-) (1:1) (CAS 2757085-07-5)
- 2-Bromo-5-methyl-4-nitrobenzamide (CAS 1805115-38-1)
- Cefotiam Impurity 8 (CAS 58233-18-4)
- 2-((1-(Furan-2-ylmethyl)-5-phenyl-1H-imidazol-2-yl)thio)-1-(pyrrolidin-1-yl)ethan-1-one (CAS 1207007-18-8)
- Benzylmethyl(1-methyl-3-(pyrrolidin-1-ylmethyl)piperidin-3-yl)carbamate (CAS 672310-26-8)
- Insulin Degludec Impurity 25 (CAS CATO-C4X-215725)
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