
Chemical identity
meta-Mirabegron
CAS 1684452-81-0 · C21H24N4O2S
01Identity
Identifiers and names for this exact compound. Empty fields are left unassigned.
| Lazychem ID | LC-19807 |
|---|---|
| PubChem CID | 117986507 |
| Name | meta-Mirabegron |
| CAS RN | 1684452-81-0 |
| Molecular formula | C21H24N4O2S |
| Molecular weight | 396.51 g/mol |
| IUPAC name | (R)-2-(2-aminothiazol-4-yl)-N-(3-(2-((2-hydroxy-2-phenylethyl)amino)ethyl)phenyl)acetamide |
| InChIKey | CUZSRXGEOXRUIM-IBGZPJMESA-N |
02Structure identifiers

Structure facts for this exact identity.
| Molecular formula | C21H24N4O2S |
|---|---|
| InChIKey | CUZSRXGEOXRUIM-IBGZPJMESA-N |
| Ring count | 3 |
| Defined stereocentres | 1 |
| Unassigned stereocentres | 0 |
| SMILES | C1=CC=C(C=C1)[C@H](CNCCC2=CC(=CC=C2)NC(=O)CC3=CSC(=N3)N)O |
|---|---|
| InChI | InChI=1S/C21H24N4O2S/c22-21-25-18(14-28-21)12-20(27)24-17-8-4-5-15(11-17)9-10-23-13-19(26)16-6-2-1-3-7-16/h1-8,11,14,19,23,26H,9-10,12-13H2,(H2,22,25)(H,24,27)/t19-/m0/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
1 recordThese records have the same connectivity, molecular formula and protonation layer, but a different complete InChIKey stereochemical layer. Only separately structure-linked records are shown.

No additional structure-linked configuration with the same connectivity is currently present in the LazyChem dataset.
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.
04Possible N-nitroso structures
A record-level structural review indicates a possible N-nitroso candidate. This is not a confirmed impurity, formation prediction or analytical finding.
A structural result alone does not establish that a nitrosamine forms. A process-specific and analytical assessment is required.
05India 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 1684452-81-0 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 1684452-81-0 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
06Names and relationships
Associated parent compound
Mirabegron
View API and impurity familyOther names
- meta-Mirabegron / Mirabegron Impurity 8
- Mirabegron Impurity 8
- Mirabegron Impurity 8 HCl
- Mirabegron Impurity G
07Documented 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.
08Sources
- S01PubChem compound record, CID 117986507
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.
