
Chemical identity
5-Hydroxy-DL-tryptophan
CAS 56-69-9 · C11H12N2O3
01Identity
Identifiers and names for this exact compound. Empty fields are left unassigned.
| Lazychem ID | LC-03510 |
|---|---|
| PubChem CID | 144 |
| Name | 5-Hydroxy-DL-tryptophan |
| CAS RN | 56-69-9 |
| Molecular formula | C11H12N2O3 |
| Molecular weight | 220.23 g/mol |
| IUPAC name | 2-Amino-3-(5-hydroxy-1H-indol-3-yl)propanoic Acid |
| InChIKey | LDCYZAJDBXYCGN-UHFFFAOYSA-N |
02Structure identifiers

The parsed structure contains 2 rings, includes aromatic atoms, includes aliphatic carbon. These statements are calculated from the published structure string.
| Defined stereocentres | 0 |
|---|---|
| Unassigned stereocentres | 1 |
| Ring count | 2 |
| Secondary amines | 0 |
| Tertiary amines | 0 |
| N-methyl amine sites | 0 |
| SMILES | C1=CC2=C(C=C1O)C(=CN2)CC(C(=O)O)N |
|---|---|
| InChI | Not listed |
| Formula from structure | C11H12N2O3 |
| Molecular weight from structure | 220.23 g/mol |
03Stereochemistry
The published structure contains 0 defined and 1 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.



Tryptophan EP Impurity D / 5-Hydroxytryptophan
CAS 4350-09-8
LDCYZAJDBXYCGN-VIFPVBQESA-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 56-69-9 has no exact match in the reviewed published schedule. |
|---|---|---|
| SCOMET | NO EXACT REVIEWED CAS MATCH | CAS 56-69-9 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
Tryptophan
View associated product familyOther names
- 5-hydroxytryptophan
- DL-5-Hydroxytryptophan
- 5-Hydroxytryptophan DL-form
- DL-2-Amino-3-(5-hydroxyindolyl)propionic acid
- 56-69-9
- 114-03-4
- 5-HTP
- DL-5-HTP
- Tryptophan, 5-hydroxy-
- 9181P3OI6N
- CHEBI:28171
- DTXSID50859863
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 144
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.
