Ritonavir impurities and related standards
14 reference standards related to Ritonavir held in the RSSE catalogue — pharmacopoeial impurities, non-compendial impurities, metabolites and labelled analogues where available.
CAS numbers are listed for 14 of 14; 12 entries carry a structure drawing.
| Compound | CAS No. | Catalogue No. | Formula | MW |
|---|---|---|---|---|
| Ritonavir EP Impurity K | 1010809-39-8 | RS-R011002 | C28H35N3O5S | 525.66 |
| Ritonavir EP Impurity H | 1010809-43-4 | RS-R011003 | C30H32N4O6S | 576.66 |
| Ritonavir Impurity 4 | 1010809-54-7 | RS-R011004 | C32H42N4O8S | 642.77 |
| Ritonavir EP Impurity F | 1010809-61-6 | RS-R011005 | C29H34N4O5S | 550.67 |
| Ritonavir EP Impurity O | 1414933-81-5 | RS-R011006 | C37H48N6O5S2 | 720.94 |
| Ritonavir Impurity 29 | 144163-97-3 | RS-R011007 | C11H8N2O5S | 280.26 |
| Ritonavir Impurity 31 | 144164-11-4 | RS-R011008 | C23H27N3O3S | 425.54 |
| Ritonavir EP Impurity A | 154212-61-0 | RS-R011009 | C14H23N3O3S | 313.42 |
| Ritonavir Impurity 44 | 162849-93-6 | RS-R011011 | C37H44N2O3 | 564.76 |
| Ritonavir EP Impurity I | 165315-26-4 | RS-R011012 | C36H46N6O5S2 | 706.92 |
| Ritonavir EP Impurity B (Hydrochloride) | 165315-97-9 | RS-R011013 | C28H36N4O4S.HCl | 524.67 |
| Ritonavir EP Impurity E | 176655-56-4 | RS-R011014 | C37H48N6O6S2 | 736.94 |
| Ritonavir EP Impurity C | 1010808-43-1 | RS-R011001 | C25H29N3O4S | 467.58 |
| Ritonavir Impurity 33 | 156732-15-9 | RS-R011010 | C32H36N2O | 464.64 |
Structures
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Ritonavir EP Impurity K
COA per lot -
Ritonavir EP Impurity H
COA per lot -
Ritonavir Impurity 4
COA per lot -
Ritonavir EP Impurity F
COA per lot -
Ritonavir EP Impurity O
COA per lot -
Ritonavir Impurity 29
COA per lot -
Ritonavir Impurity 31
COA per lot -
Ritonavir EP Impurity A
COA per lot
Cannot find the impurity you need? Non-compendial impurities can be quoted from a structure — a CAS number is not required. Write to [email protected].







