Sildenafil Impurity 272 CAS CATO-C4X-1128272
| CAS No. | CATO-C4X-1128272 |
| Molecular Formula | C38H48N10O8S2 |
| Molecular Weight | 836.98 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Based on its molecular formula C38H48N10O8S2, Sildenafil Impurity 272 contains a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 836.98 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
Sildenafil Impurity 272 (CAS CATO-C4X-1128272) is a certified pharmaceutical impurity reference standard with the molecular formula C38H48N10O8S2 and a molecular weight of 836.98 g/mol.
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.
As a certified reference material (CRM), Sildenafil Impurity 272 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 | C38H48N10O8S2 |
| Molecular Weight | 836.98 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) | 20.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 10 |
| Sulfur Atoms | 2 |
Related Sildenafil Standards
- Sildenafil EP Impurity G (CAS 1346602-67-2)
- Sildenafil Impurity 268 (CAS CATO-C4X-1128268)
- Sildenafil Impurity 273 (CAS CATO-C4X-1128273)
- Sildenafil Impurity 305 (CAS CATO-C4X-1128305)
- Sildenafil Impurity 302 (CAS CATO-C4X-1128302)
- Sildenafil Impurity 12 (CAS 1346603-48-2)
- Sildenafil Impurity 307 (CAS CATO-C4X-1128307)
- Sildenafil Impurity 297 (CAS CATO-C4X-1128297)
Recommended Standards
- 94168-98-6 1PUG6262HX Rifametane [USAN:INN] Rifametane Rifamycin, 3-(((1-(diethylamino)ethylidene)hydrazono)methyl)- (2S,12Z,14E,16S,17S,18R,19R,20R,21S,22S,23S,24E)-1,2-Dihydro-5,6,9,17,19,21-hexahydroxy-23-methoxy-2,4,12,16,18,20,22-heptamethyl-1,11-dioxo-2,7-(epoxypentadeca(1,11,13)trienimino)naphtho(2,1-b)furan-8-carboxyaldehyde, 8-azine with N,N-diethylacetamide, 21-acetate Rifametano [INN-Spanish] Rifametanum [INN-Latin] SPA S565 Rifametano Rifametanum UNII-1PUG6262HX SPA-S-565 Spa-S 565 (CAS 94168-98-6)
- Fmoc-Cys(Trt)-Cys(Psi(Dmp,H)pro)-OH (CAS 2022956-75-6)
- Glycyrrhizic Acid Methyl Ester (CAS 104191-95-9)
- Revefenacin Impurity 5 (CAS CATO-C4X-20315)
- Tiamulin impurity 19 (CAS CATO-C4X-221019)
- Nabumetone impurity 31 (CAS CATO-C4X-284831)
- Dexamethasone Impurity 58 (CAS CATO-C4X-116558)
- N-benzyl-4-((2-oxo-5-(trifluoromethyl)pyridin-1(2H)-yl)methyl)benzamide (CAS 339025-04-6)
- 1-Tert-butyl-3,5-dimethyl-1h-pyrazole-4-carbaldehyde (CAS 647824-51-9)
- N-(2-Cyclopropoxy-6-(methylamino)phenyl)methanesulfonamide (CAS 1243313-34-9)
- (R)-2-Amino-5,5,5-trifluoropentanoic acid (CAS 122565-29-1)
- Tofacitinib Impurity 120 (CAS CATO-C4X-1079120)
- 6-((tert-Butoxycarbonyl)amino)pyridazine-4-carboxylic acid (CAS 2452465-21-1)
- Palmitoyl Tripeptide-8 TFA salt (CAS 936544-53-5)
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