
Chemical identity
(-)-Isomenthol
CAS 20752-33-4 · C10H20O
01Identity
Identifiers and names for this exact compound. Empty fields are left unassigned.
| Lazychem ID | LC-14024 |
|---|---|
| PubChem CID | 6432468 |
| Name | (-)-Isomenthol |
| CAS RN | 20752-33-4 |
| Molecular formula | C10H20O |
| Molecular weight | 156.27 g/mol |
| IUPAC name | (1R,2S,5S)-2-Isopropyl-5-methylcyclohexan-1-ol |
| InChIKey | NOOLISFMXDJSKH-LPEHRKFASA-N |
02Structure identifiers

The parsed structure contains 1 ring, includes aliphatic carbon, has 3 defined stereocentres. These statements are calculated from the published structure string.
| Defined stereocentres | 3 |
|---|---|
| Unassigned stereocentres | 0 |
| Ring count | 1 |
| Secondary amines | 0 |
| Tertiary amines | 0 |
| N-methyl amine sites | 0 |
| SMILES | C[C@H]1CC[C@H]([C@@H](C1)O)C(C)C |
|---|---|
| InChI | Not listed |
| Formula from structure | C10H20O |
| Molecular weight from structure | 156.27 g/mol |
03Stereochemistry
The published structure contains 3 defined and 0 unassigned tetrahedral stereocentres. The exact wedge and dash depiction is shown above.
Published same-connectivity configurations
7 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.





(1S,2R,5R)-2-Isopropyl-5-methylcyclohexan-1-ol
CAS 23283-97-8
NOOLISFMXDJSKH-BBBLOLIVSA-N
3 defined, 0 unassigned centres

(1S)-(1rH,4cH)-p-menthan-3t-ol
CAS 64282-88-8
NOOLISFMXDJSKH-GUBZILKMSA-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.
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 20752-33-4 has no exact match in the reviewed published schedule. |
|---|---|---|
| SCOMET | NO EXACT REVIEWED CAS MATCH | CAS 20752-33-4 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
Emtricitabine
View API and impurity familyOther names
- Emtricitabine Impurity 9
- (-)-Isomenthol
- 3623-52-7
- DL-ISOMENTHOL
- Q3I568EO1X
- FEMA NO. 4729
- Cyclohexanol, 5-methyl-2-(1-methylethyl)-, (1R,2S,5S)-rel-
- (A+-)-Isomenthol
- RefChem:791897
- 207-722-7
- 20752-33-4
- (1R,2S,5S)-2-ISOPROPYL-5-METHYLCYCLOHEXANOL
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 6432468
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.
