2D structurePubChem CID 779
Chemical identity
Threonine EP Impurity A / Homoserine
CAS 672-15-1 · C4H9NO3
01Identity
Identifiers and names for this exact compound. Empty fields are left unassigned.
| Lazychem ID | LC-29505 |
|---|---|
| PubChem CID | 779 |
| Name | Threonine EP Impurity A / Homoserine |
| CAS RN | 672-15-1 |
| Molecular formula | C4H9NO3 |
| Molecular weight | 119.12 g/mol |
| IUPAC name | (2S)-2-amino-4-hydroxybutanoic acid |
| InChIKey | UKAUYVFTDYCKQA-UHFFFAOYSA-N |
02Structure identifiers
2D structurePubChem CID 779
The parsed structure is acyclic, includes aliphatic carbon. These statements are calculated from the published structure string.
| Defined stereocentres | 0 |
|---|---|
| Unassigned stereocentres | 1 |
| Ring count | 0 |
| Secondary amines | 0 |
| Tertiary amines | 0 |
| N-methyl amine sites | 0 |
| SMILES | C(CO)C(C(=O)O)N |
|---|---|
| InChI | Not listed |
| Formula from structure | C4H9NO3 |
| Molecular weight from structure | 119.12 g/mol |
03Stereochemistry
The published structure contains 0 defined and 1 unassigned tetrahedral stereocentre. The exact wedge and dash depiction is shown above.
Defined centres0Structure assigned
Unassigned centres1Structure unspecified
Assignment statusUnassignedExact published identity
Tetrahedral upper bound≤ 2Before symmetry reduction
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.
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 672-15-1 has no exact match in the reviewed published schedule. |
|---|---|---|
| SCOMET | NO EXACT REVIEWED CAS MATCH | CAS 672-15-1 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
Threonine
View API and impurity familyOther names
- Threonine EP Impurity A
- L-Homoserine
- (2S)-2-azaniumyl-4-hydroxybutanoate
- (S)-2-Amino-4-hydroxybutanoate
- Homoserine
06Documented history
Dated discovery, occurrence, use and issue claims are published only when a suitable primary or government source is available.
No dated history available
No verified discovery, first report, occurrence, use or issue event is currently available for this identity.
07Sources
- S01PubChem compound record, CID 779
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.