Chemical identity
2-(2-aminothiazol-4-yl)acetic acid hydrochloride
CAS 66659-20-9 · C5H7ClN2O2S
01Identity
Identifiers and names for this exact compound. Empty fields are left unassigned.
| Lazychem ID | LC-01591 |
|---|---|
| PubChem CID | 13017673 |
| Name | 2-(2-aminothiazol-4-yl)acetic acid hydrochloride |
| CAS RN | 66659-20-9 |
| Molecular formula | C5H7ClN2O2S |
| Molecular weight | 194.64 g/mol |
| IUPAC name | 2-(2-aminothiazol-4-yl)acetic acid hydrochloride |
| InChIKey | ZEWJJZKVQOMYKJ-UHFFFAOYSA-N |
02Structure identifiers

The parsed structure contains 1 ring, includes aromatic atoms, includes aliphatic carbon, contains at least one halogen atom. These statements are calculated from the published structure string.
| Defined stereocentres | 0 |
|---|---|
| Unassigned stereocentres | 0 |
| Ring count | 1 |
| Secondary amines | 0 |
| Tertiary amines | 0 |
| N-methyl amine sites | 0 |
| SMILES | C1=C(N=C(S1)N)CC(=O)O.Cl |
|---|---|
| InChI | Not listed |
| Formula from structure | C5H7ClN2O2S |
| Molecular weight from structure | 194.64 g/mol |
03India 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 66659-20-9 has no exact match in the reviewed published schedule. |
|---|---|---|
| SCOMET | NO EXACT REVIEWED CAS MATCH | CAS 66659-20-9 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
04Names and relationships
Associated parent compound
Ceftibuten
View API and impurity familyOther names
- 2-(2-Amino-4-thiazolyl)acetic Acid HCl
- 2-(2-amino-1, 3-thiazol-4-yl)acetic acid hydrochloride
- 2-(2-azanyl-1, 3-thiazol-4-yl)ethanoic acid hydrochloride
- (2-Amino-1,3-thiazol-4-yl)acetic acid--hydrogen chloride (1/1)
- 66659-20-9
- DTXSID00515306
- RefChem:205705
- DTXCID10466113
- 2-(2-Aminothiazol-4-yl)acetic acid hydrochloride
- 2-(2-Aminothiazol-4-yl)acetic acid HCl
- MFCD06658943
- 2-Amino-4-thiazoleacetic acid hydrochloride
05Documented 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.
06Sources
- S01PubChem compound record, CID 13017673
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.
