
Chemical identity
Sofosbuvir Isomer Impurity 17
CAS not listed · C22H29FN3O9P
01Identity
Identifiers and names for this exact compound. Empty fields are left unassigned.
| Lazychem ID | LC-28292 |
|---|---|
| PubChem CID | 129406570 |
| Name | Sofosbuvir Isomer Impurity 17 |
| CAS RN | Not listed |
| Molecular formula | C22H29FN3O9P |
| Molecular weight | 529.45 g/mol |
| IUPAC name | (S)-isopropyl 2-(((R)-(((2R,3R,4R,5S)-5-(2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)-4-fluoro-3-hydroxy-4-methyltetrahydrofuran-2-yl)methoxy)(phenoxy)phosphoryl)amino)propanoate |
| InChIKey | TTZHDVOVKQGIBA-ZVLCRAHUSA-N |
02Structure identifiers

Structure facts for this exact identity.
| Molecular formula | C22H29FN3O9P |
|---|---|
| InChIKey | TTZHDVOVKQGIBA-ZVLCRAHUSA-N |
| Ring count | 3 |
| Defined stereocentres | 6 |
| Unassigned stereocentres | 0 |
| SMILES | C[C@@H](C(=O)OC(C)C)N[P@@](=O)(OC[C@@H]1[C@H]([C@@]([C@H](O1)N2C=CC(=O)NC2=O)(C)F)O)OC3=CC=CC=C3 |
|---|---|
| InChI | InChI=1S/C22H29FN3O9P/c1-13(2)33-19(29)14(3)25-36(31,35-15-8-6-5-7-9-15)32-12-16-18(28)22(4,23)20(34-16)26-11-10-17(27)24-21(26)30/h5-11,13-14,16,18,20,28H,12H2,1-4H3,(H,25,31)(H,24,27,30)/t14-,16+,18+,20-,22+,36+/m0/s1 |
03Stereochemistry
The published structure contains 6 defined and 0 unassigned tetrahedral stereocentres. The exact wedge-and-dash depiction is shown above.
Published same-connectivity configurations
14 recordsThese records have the same connectivity, molecular formula and protonation layer, but a different complete InChIKey stereochemical layer. Only separately structure-linked records are shown.




Isopropyl ((S)-(((2R,3R,4R,5R)-5-(2,4-Dioxo-3,4-Dihydropyrimidin-1(2H)-Yl)-4-Fluoro-3-Hydroxy-4-Methyltetrahydrofuran-2-Yl)Methoxy)(Phenoxy)Phosphoryl)-D-Alaninate
CAS 1496552-28-3
TTZHDVOVKQGIBA-MOLXTFABSA-N
6 defined, 0 unassigned centres
![2D structure: Isopropyl (2S)-2-{[{[(2R,3R,4R,5S)-5-(2,4-dioxo-3,4-dihydro-1(2H)-pyrimidinyl)-4-fluoro-3-hydroxy-4-methyltetrahydro-2-furanyl]methoxy}(phenoxy)phosphoryl]amino}propanoate](/structures/pubchem/118703177/no-cas-isopropyl-2s-2-2r-3r-4r-5s-5-2-4-dioxo-3-4-dihydro-1-2h-pyrimidinyl-4-fluoro-3-hydroxy-4-m-2d-structure-300.png)
Isopropyl (2S)-2-{[{[(2R,3R,4R,5S)-5-(2,4-dioxo-3,4-dihydro-1(2H)-pyrimidinyl)-4-fluoro-3-hydroxy-4-methyltetrahydro-2-furanyl]methoxy}(phenoxy)phosphoryl]amino}propanoate
CAS Not listed
TTZHDVOVKQGIBA-ZNLCQZDSSA-N
5 defined, 1 unassigned centres

N-((2'R)-2'-Deoxy-2'-fluoro-2'-methyl-p-phenyl-5'-uridylyl)-L-alanine 1-methylethyl ester
CAS Not listed
TTZHDVOVKQGIBA-IAAJYNJHSA-N
5 defined, 1 unassigned centres








Sofosbuvir IP Impurity A / Sofosbuvir (R)-Phosphate / Sofosbuvir Rp-Isomer
CAS 1190308-01-0
TTZHDVOVKQGIBA-YBSJRAAASA-N
6 defined, 0 unassigned centres
Scope: The mathematical 2^n value is only an upper bound. Symmetry and other stereogenic elements can change the number of distinct stereoisomers. A hypothetical configuration is not published as a compound record without a verified structure identity.
04India status for this compound
These results apply only to this exact compound name and CAS number. Confirm the current official instruments before making a regulatory decision.
| NDPS / RCS | NOT FOUND IN REVIEWED ENTRIES | No CAS number is available for an exact comparison. Generic and analogue entries were not evaluated. |
|---|---|---|
| SCOMET | NOT FOUND IN REVIEWED CAS ENTRIES | No CAS number is available for an exact comparison. Generic and analogue entries were not evaluated. |
- Narcotic Drugs and Psychotropic Substances Act, 1985, ScheduleDepartment of Revenue, Government of India · source version 1985-09-16
- Controlled-substances notifications and amendmentsDepartment of Revenue, Government of India · source version 2026-03-11
- Appendix 3, SCOMET ListDirectorate General of Foreign Trade, Government of India · source version 2024-09-02
05Names and relationships
Associated parent compound
Sofosbuvir
View API and impurity familyOther names
No synonyms are listed.
06Documented history
Dated discovery, occurrence, use and issue claims are published only when a suitable primary or government source is available.
No verified discovery, first report, occurrence, use or issue event is currently available for this identity.
07Sources
- S01PubChem compound record, CID 129406570
Names and machine-readable chemical identity properties.
- S02NCBI website and molecular data policies
Reuse policy for NCBI molecular data. This page does not reproduce vendor descriptions or contributed narrative text.
- S03Narcotic Drugs and Psychotropic Substances Act, 1985, Schedule
Department of Revenue, Government of India. Used for the exact-compound India status shown on this page.
- S04Controlled-substances notifications and amendments
Department of Revenue, Government of India. Used for the exact-compound India status shown on this page.
- S05Appendix 3, SCOMET List
Directorate General of Foreign Trade, Government of India. Used for the exact-compound India status shown on this page.
