Chemical identity
Olaparib (E) isobenzofuran-1(3H)-one
CAS 2905341-98-0 · C24H21FN2O4
01Identity
Identifiers and names for this exact compound. Empty fields are left unassigned.
| Lazychem ID | LC-23963 |
|---|---|
| PubChem CID | 168429556 |
| Name | Olaparib (E) isobenzofuran-1(3H)-one |
| CAS RN | 2905341-98-0 |
| Molecular formula | C24H21FN2O4 |
| Molecular weight | 420.43 g/mol |
| IUPAC name | (E)-3-[3-(4-Cyclopropanecarbonyl-piperazine-1-carbonyl)-4-fluoro-benzylidene]-3H-isobenzofuran-1-one |
| InChIKey | JJMDUKXVRJKNDV-KGENOOAVSA-N |
02Structure identifiers

The parsed structure contains 5 rings, includes aromatic atoms, includes aliphatic carbon, contains at least one halogen atom. These statements are calculated from the published structure string.
| Defined stereocentres | 0 |
|---|---|
| Unassigned stereocentres | 0 |
| Ring count | 5 |
| Secondary amines | 0 |
| Tertiary amines | 0 |
| N-methyl amine sites | 0 |
| SMILES | C1CC1C(=O)N2CCN(CC2)C(=O)C3=C(C=CC(=C3)/C=C/4\C5=CC=CC=C5C(=O)O4)F |
|---|---|
| InChI | Not listed |
| Formula from structure | C24H21FN2O4 |
| Molecular weight from structure | 420.43 g/mol |
03India 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 | NO EXACT MATCH FOUND | CAS 2905341-98-0 has no exact match in the reviewed published schedule. |
|---|---|---|
| SCOMET | NO EXACT REVIEWED CAS MATCH | CAS 2905341-98-0 has no exact match in the reviewed SCOMET list. |
| Review date | 2026-08-01 | Recheck the current official instruments for the material, concentration, activity and date in question. |
- Narcotic Drugs and Psychotropic Substances Act, 1985, ScheduleDepartment of Revenue, Government of India · reviewed 2026-08-01
- Controlled-substances notifications and amendmentsDepartment of Revenue, Government of India · reviewed 2026-08-01
- Appendix 3, SCOMET ListDirectorate General of Foreign Trade, Government of India · reviewed 2026-08-01
04Names and relationships
Associated parent compound
Olaparib
View API and impurity familyOther names
- (3E/Z)-3-({3-[4-(Cyclopropanecarbonyl)piperazine-1-carbonyl]-4-fluorophenyl} methylidene)-2-benzofuran-1(3H)-one
- Olaparib Impurity Q
- V5KE2NK9EU
- 2905341-98-0
- (E)-3-(3-(4-(cyclopropanecarbonyl)piperazine-1-carbonyl)-4-fluorobenzylidene)isobenzofuran-1(3H)-one
- 1(3H)-Isobenzofuranone, 3-[[3-[[4-(cyclopropylcarbonyl)-1-piperazinyl]carbonyl]-4-fluorophenyl]methylene]-, (3E)-
- 3-[[3-[[4-(cyclopropylcarbonyl)-1-piperazinyl]carbonyl]-4-fluorophenyl]methylene]-1(3H)-Isobenzofuranone, (3E)-
05Documented 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.
06Sources
- S01PubChem compound record, CID 168429556
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.
