
Chemical identity
Pidotimod Impurity D
CAS 162148-15-4 · C9H12N2O4S
01Identity
Identifiers and names for this exact compound. Empty fields are left unassigned.
| Lazychem ID | LC-25233 |
|---|---|
| PubChem CID | 7048518 |
| Name | Pidotimod Impurity D |
| CAS RN | 162148-15-4 |
| Molecular formula | C9H12N2O4S |
| Molecular weight | 244.27 g/mol |
| IUPAC name | (S)-3-((R)-5-Oxopyrrolidine-2-carbonyl)thiazolidine-4-carboxylic Acid |
| InChIKey | UUTKICFRNVKFRG-PHDIDXHHSA-N |
02Structure identifiers

The parsed structure contains 2 rings, includes aliphatic carbon, has 2 defined stereocentres. These statements are calculated from the published structure string.
| Defined stereocentres | 2 |
|---|---|
| Unassigned stereocentres | 0 |
| Ring count | 2 |
| Secondary amines | 0 |
| Tertiary amines | 0 |
| N-methyl amine sites | 0 |
| SMILES | C1CC(=O)N[C@H]1C(=O)N2CSC[C@@H]2C(=O)O |
|---|---|
| InChI | Not listed |
| Formula from structure | C9H12N2O4S |
| Molecular weight from structure | 244.27 g/mol |
03Stereochemistry
The published structure contains 2 defined and 0 unassigned tetrahedral stereocentres. The exact wedge and dash depiction is shown above.
Published same-connectivity configurations
4 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.


(R)-3-((R)-5-Oxopyrrolidine-2-carbonyl)thiazolidine-4-carboxylic acid
CAS not listed
UUTKICFRNVKFRG-RITPCOANSA-N
2 defined, 0 unassigned centres

3-(5-Oxopyrrolidine-2-carbonyl)-1,3-thiazolidine-4-carboxylic acid
CAS not listed
UUTKICFRNVKFRG-UHFFFAOYSA-N
0 defined, 2 unassigned centres

Pidotimod Impurity E / (S)-3-((S)-5-oxopyrrolidine-2-carbonyl)thiazolidine-4-carboxylic acid
CAS 162148-16-5
UUTKICFRNVKFRG-NTSWFWBYSA-N
2 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 162148-15-4 has no exact match in the reviewed published schedule. |
|---|---|---|
| SCOMET | NO EXACT REVIEWED CAS MATCH | CAS 162148-15-4 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
Pidotimod
View API and impurity familyOther names
- (S)-3-((R)-5-Oxopyrrolidine-2-carbonyl)thiazolidine-4-carboxylic acid
- Pidotimod Impurity D
- 162148-15-4
- 4S,2R-Pidotimod
- (4S)-3-[(2R)-5-oxopyrrolidine-2-carbonyl]-1,3-thiazolidine-4-carboxylic acid
- Pidotimod, (4S,2R)-
- 3-D-Pyroglutamyl-(S)-thiazolidine-4-carboxylic acid
- 3F52L8L6PY
- IO145579
- G63096
- 4-Thiazolidinecarboxylic acid, 3-[(5-oxo-2-pyrrolidinyl)carbonyl]-, [S-(R*,S*)]-
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 7048518
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.
