
Chemical identity
(+)-4-Phenyl-2-oxazolidinone
CAS 99395-88-7 · C9H9NO2
01Identity
Identifiers and names for this exact compound. Empty fields are left unassigned.
| Lazychem ID | LC-14945 |
|---|---|
| PubChem CID | 730424 |
| Name | (+)-4-Phenyl-2-oxazolidinone |
| CAS RN | 99395-88-7 |
| Molecular formula | C9H9NO2 |
| Molecular weight | 163.18 g/mol |
| IUPAC name | (S)-4-phenyloxazolidin-2-one |
| InChIKey | QDMNNMIOWVJVLY-MRVPVSSYSA-N |
02Structure identifiers

The parsed structure contains 2 rings, includes aromatic atoms, includes aliphatic carbon, has 1 defined stereocentre. These statements are calculated from the published structure string.
| Defined stereocentres | 1 |
|---|---|
| Unassigned stereocentres | 0 |
| Ring count | 2 |
| Secondary amines | 0 |
| Tertiary amines | 0 |
| N-methyl amine sites | 0 |
| SMILES | C1[C@@H](NC(=O)O1)C2=CC=CC=C2 |
|---|---|
| InChI | Not listed |
| Formula from structure | C9H9NO2 |
| Molecular weight from structure | 163.18 g/mol |
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.


(4R)-4-phenyl-1,3-oxazolidin-2-one
CAS not listed
QDMNNMIOWVJVLY-QMMMGPOBSA-N
1 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 | NO EXACT MATCH FOUND | CAS 99395-88-7 has no exact match in the reviewed published schedule. |
|---|---|---|
| SCOMET | NO EXACT REVIEWED CAS MATCH | CAS 99395-88-7 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
05Names and relationships
Associated parent compound
Ezetimibe
View API and impurity familyOther names
- Ezetimibe Impurity 66
- (+)-4-Phenyl-2-oxazolidinone
- (4S)-4-Phenyl-2-oxazolidinone
- (4S)-4-phenyl-1,3-oxazolidin-2-one
- (S)-4-Phenyl-1,3-oxazolidin-2-one
- (S)-4-Phenyl-2-oxazolidinone
- 2-Oxazolidinone, 4-phenyl-, (4S)-
- 2-Oxazolidinone, 4-phenyl-,(S)-
- S-Poz
- 99395-88-7
- (4S)-4-phenyloxazolidin-2-one
- DJ3K4V6J29
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 730424
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.
