
Chemical identity
Silodosin S-Isomer
CAS 2182279-45-2 · C25H32F3N3O4
01Identity
Identifiers and names for this exact compound. Empty fields are left unassigned.
| Lazychem ID | LC-28086 |
|---|---|
| PubChem CID | 656628 |
| Name | Silodosin S-Isomer |
| CAS RN | 2182279-45-2 |
| Molecular formula | C25H32F3N3O4 |
| Molecular weight | 495.53 g/mol |
| IUPAC name | 1-(3-Hydroxypropyl)-5-[(2S)-({2-[2-[2-(2,2,2-trifluoroethoxy)phenoxy] ethyl} amino)propyl]indoline-7-carboxamide |
| InChIKey | PNCPYILNMDWPEY-KRWDZBQOSA-N |
02Structure identifiers

Structure facts for this exact identity.
| Molecular formula | C25H32F3N3O4 |
|---|---|
| InChIKey | PNCPYILNMDWPEY-KRWDZBQOSA-N |
| Ring count | 3 |
| Defined stereocentres | 1 |
| Unassigned stereocentres | 0 |
| SMILES | C[C@@H](CC1=CC2=C(C(=C1)C(=O)N)N(CC2)CCCO)NCCOC3=CC=CC=C3OCC(F)(F)F |
|---|---|
| InChI | InChI=1S/C25H32F3N3O4/c1-17(30-8-12-34-21-5-2-3-6-22(21)35-16-25(26,27)28)13-18-14-19-7-10-31(9-4-11-32)23(19)20(15-18)24(29)33/h2-3,5-6,14-15,17,30,32H,4,7-13,16H2,1H3,(H2,29,33)/t17-/m0/s1 |
03Stereochemistry
The published structure contains 1 defined and 0 unassigned tetrahedral stereocentre. The exact wedge-and-dash depiction is shown above.
Published same-connectivity configurations
3 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.


1-(3-Hydroxypropyl)-5-(2-((2-(2-(2,2,2-trifluoroethoxy)phenoxy)ethyl)amino)propyl)-2,3-dihydro-1H-indole-7-carboxamide
CAS Not listed
PNCPYILNMDWPEY-UHFFFAOYSA-N
0 defined, 1 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.
04Possible N-nitroso structures
A record-level structural review indicates a possible N-nitroso candidate. This is not a confirmed impurity, formation prediction or analytical finding.
A structural result alone does not establish that a nitrosamine forms. A process-specific and analytical assessment is required.
05India 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 | CAS 2182279-45-2 was not found in the reviewed exact-identity entries. Generic, class, analogue, salt and isomer provisions were not evaluated. |
|---|---|---|
| SCOMET | NOT FOUND IN REVIEWED CAS ENTRIES | CAS 2182279-45-2 was not found in the reviewed exact-CAS mapping. 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
06Names and relationships
Associated parent compound
Silodosin
View API and impurity familyOther names
- (S)-Silodosin
- Silodosin Impurity 2
- PNCPYILNMDWPEY-KRWDZBQOSA-N
- NCGC00346558-01
- (S)-1-(3-Hydroxypropyl)-5-(2-((2-(2-(2,2,2-trifluoroethoxy)phenoxy)ethyl)amino)propyl)indoline-7-carboxamide
- 1-(3-hydroxypropyl)-5-[(2S)-2-[2-[2-(2,2,2-trifluoroethoxy)phenoxy]ethylamino]propyl]-2,3-dihydroindole-7-carboxamide
07Documented 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.
08Sources
- S01PubChem compound record, CID 656628
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.
