
Chemical identity
Levodopa EP Impurity D
CAS 5796-17-8 · C9H11NO4
01Identity
Identifiers and names for this exact compound. Empty fields are left unassigned.
| Lazychem ID | LC-31948 |
|---|---|
| PubChem CID | 92222 |
| Name | Levodopa EP Impurity D |
| CAS RN | 5796-17-8 |
| Molecular formula | C9H11NO4 |
| Molecular weight | 197.19Â g/mol |
| IUPAC name | (2R)-2-Amino-3-(3,4-dihydroxyphenyl)propanoic acid |
| InChIKey | WTDRDQBEARUVNC-ZCFIWIBFSA-N |
02Structure identifiers

Structure facts for this exact identity.
| Molecular formula | C9H11NO4 |
|---|---|
| InChIKey | WTDRDQBEARUVNC-ZCFIWIBFSA-N |
| Ring count | 1 |
| Defined stereocentres | 1 |
| Unassigned stereocentres | 0 |
| SMILES | C1=CC(=C(C=C1C[C@H](C(=O)O)N)O)O |
|---|---|
| InChI | InChI=1S/C9H11NO4/c10-6(9(13)14)3-5-1-2-7(11)8(12)4-5/h1-2,4,6,11-12H,3,10H2,(H,13,14)/t6-/m1/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
2 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.


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 | CAS 5796-17-8 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 5796-17-8 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
05Names and relationships
Associated parent compound
Levodopa
View API and impurity familyOther names
- D-Dopa
- dopa d-form
- 3-Hydroxy-D-tyrosine
- (2R)-2-amino-3-(3,4-dihydroxyphenyl)propanoic acid
- 3,4-Dihydroxy-D-phenylalanine
- D-3,4-Dihydroxyphenylalanine
- D-3-(3,4-Dihydroxyphenyl)alanine
- (+)-3-(3,4-Dihydroxyphenyl)alanine
- (+)-3,4-Dihydroxyphenylalanine
- Dopa, D-
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 92222
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.
