
API and parent drug
Aprepitant
CAS 170729-80-3 · C23H21F7N4O3 · 24 related records
01API identity and structure

| API / medicine name | Aprepitant |
|---|---|
| CAS RN | 170729-80-3 |
| PubChem CID | 135413536 |
| Molecular formula | C23H21F7N4O3 |
| Molecular weight | 534.4 g/mol |
| IUPAC name | 3-[[(2R,3S)-2-[(1R)-1-[3,5-bis(trifluoromethyl)phenyl]ethoxy]-3-(4-fluorophenyl)morpholin-4-yl]methyl]-1,4-dihydro-1,2,4-triazol-5-one |
| Defined stereocentres | 3 |
| Unassigned stereocentres | 0 |
| SMILES | C[C@H](C1=CC(=CC(=C1)C(F)(F)F)C(F)(F)F)O[C@@H]2[C@@H](N(CCO2)CC3=NNC(=O)N3)C4=CC=C(C=C4)F |
|---|---|
| InChI | Not listed |
| InChIKey | ATALOFNDEOCMKK-OITMNORJSA-N |
02Stereochemistry
The published structure contains 3 defined and 0 unassigned tetrahedral stereocentres. The exact wedge-and-dash depiction is shown above.
Published same-connectivity configurations
8 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.







Aprepitant Related Compound A
CAS 1148113-53-4
ATALOFNDEOCMKK-TVNIXMEMSA-N
3 defined, 0 unassigned centres

Aprepitant Related Compound B
CAS 172822-29-6
ATALOFNDEOCMKK-KNMUDHKVSA-N
3 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.
03Structural nitrosamine screen
No record-level structural candidate is currently published for this identity.
This result does not predict manufacturing conditions, formation, analytical findings or absence of risk. A process-specific assessment is required.
04India status for this compound
The result below applies only to this exact compound identity and CAS number.
| NDPS / RCS | NOT FOUND IN REVIEWED ENTRIES | No exact reviewed identity entry was found. Generic, class, analogue, salt and isomer provisions were not evaluated. Confirm the current official schedule before a regulatory decision. |
|---|---|---|
| SCOMET | NOT FOUND IN REVIEWED CAS ENTRIES | CAS 170729-80-3 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
06Sources
- S01PubChem compound record, CID 135413536
Structure, identifiers and machine-readable properties for the API identity.
- S02NCBI website and molecular data policies
Reuse policy for NCBI molecular data. Vendor descriptions and contributed narrative text are not reproduced.
- S03Lazychem chemical records
Parent-family links use the supplied parent identity.







![2D structure: 2-[(1R)-1-[3,5-bis(trifluoromethyl)phenyl]ethoxy]-3-(4-fluorophenyl)-5,6-dihydro, CAS 380499-07-0](/structures/pubchem/10274609/380499-07-0-2-1r-1-3-5-bis-trifluoromethyl-phenyl-ethoxy-3-4-fluorophenyl-5-6-dihydro-2d-structure-300.png)









