Ritonavir EP Impurity O CAS 1414933-81-5
| CAS No. | 1414933-81-5 |
| Molecular Formula | C37H48N6O5S2 |
| Molecular Weight | 720.94 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
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 supplies Ritonavir EP Impurity O (CAS 1414933-81-5), a pharmacopoeial impurity reference standard (molecular formula C37H48N6O5S2, MW 720.94 g/mol) used for the identification and quantification of trace impurities in APIs.
The molecular framework of Ritonavir EP Impurity O (C37H48N6O5S2) is characterized by a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
CATO manufactures Ritonavir EP Impurity O 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 | C37H48N6O5S2 |
| Molecular Weight | 720.94 g/mol |
| Purity | >95% |
| 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) | 17.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1991 |
| Nitrogen Atoms | 6 |
| Sulfur Atoms | 2 |
Related Ritonavir Standards
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- Ritonavir EP Impurity N (CAS 202816-62-4)
- Ritonavir EP Impurity Q (CAS 1414933-82-6)
- Ritonavir EP Impurity R (CAS 1414933-80-4)
- Ritonavir impurity 48 (CAS CATO-C4X-175148)
- Ritonavir Impurity 56 (CAS CATO-C4X-175156)
- Ritonavir Dehydro (CAS 1156504-13-0)
Recommended Standards
- N1-(1-Benzyl-3-hydroxy-5-phenyl-4-{[(1,3-thiazol-5-ylmethoxy)carbonyl]amino}pentyl)-N2-{[[(5-isopropyl-1,3-thiazol-2-yl)methyl](methyl)amino]carbonyl}valinamide (CAS 2096495-89-3)
- N,N'-Bis(9,9-dimethyl-9H-fluoren-2-yl)-N,N'-diphenylbenzidine (CAS 361486-60-4)
- Nonacyclo[43.3.1.13,7.19,13.115,19.121,25.127,31.133,37.139,43]hexapentaconta-1(49),3,5,7(56),9,11,13(55),15,17,19(54),21,23,25(53),27,29,31(52),33,35,37(51),39,41,43(50),45,47-tetracosaene (CAS 82040-66-2)
- Azithromycin EP Impurity E (CAS 612069-27-9)
- Crisaborole Impurity 135 (CAS CATO-C4X-2021135)
- Palbociclib Impurity 180 (CAS 2777066-29-0)
- Linezolid Impurity 113 (CAS CATO-C4X-1073113)
- Droperidol Impurity 11 (CAS CATO-C4X-276911)
- 4-Imino-6,8-dimethyl-4H-pyrido[1,2-a]pyrimidine-3-carboxylic acid (CAS 61559-91-9)
- N-(2-Hydroxy-2-methyl-4-(methylthio)butyl)-2-(naphthalen-1-yl)acetamide (CAS 1396806-71-5)
- N-[(2-Chlorophenyl)methyl]-6-{[(4-chlorophenyl)sulfanyl]methyl}-2-methylpyrimidin-4-amine (CAS 338960-32-0)
- 2-((6-Iodohexyl)oxy)tetrahydro-2H-pyran (CAS 65785-44-6)
- 11-Ethyl-6,8-Dimethyloxazolo[5,4,3-Ij]Pyrido[3,2-G]Quinoline-4,10(2H,11H)-Dione (CAS 1809737-28-7)
- Liraglutide Impurity 18 TFA Salt (CAS CATO-C4X-199218)
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