Chemical identity
Octadecanaldehyde
CAS 638-66-4 · C18H36O
01Identity
Identifiers and names for this exact compound. Empty fields are left unassigned.
| Lazychem ID | LC-23885 |
|---|---|
| PubChem CID | 12533 |
| Name | Octadecanaldehyde |
| CAS RN | 638-66-4 |
| Molecular formula | C18H36O |
| Molecular weight | 268.48 g/mol |
| IUPAC name | 1-Octadecanal |
| InChIKey | FWWQKRXKHIRPJY-UHFFFAOYSA-N |
02Structure identifiers

The parsed structure is acyclic, includes aliphatic carbon. These statements are calculated from the published structure string.
| Defined stereocentres | 0 |
|---|---|
| Unassigned stereocentres | 0 |
| Ring count | 0 |
| Secondary amines | 0 |
| Tertiary amines | 0 |
| N-methyl amine sites | 0 |
| SMILES | CCCCCCCCCCCCCCCCCC=O |
|---|---|
| InChI | Not listed |
| Formula from structure | C18H36O |
| Molecular weight from structure | 268.48 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 638-66-4 has no exact match in the reviewed published schedule. |
|---|---|---|
| SCOMET | NO EXACT REVIEWED CAS MATCH | CAS 638-66-4 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
04Names and relationships
Associated parent compound
Irganox
View associated product familyOther names
- Octadecanal
- Stearaldehyde
- Stearyl aldehyde
- 1-octadecanal
- PH4GZ7JT4C
- EINECS 211-346-9
- NSC 68100
- UNII-PH4GZ7JT4C
- CHEBI:17034
- DTXSID60213250
- Octadecanal (9CI)
- RefChem:167578
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 12533
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.
