
Chemical identity
N-Desmethyl cyamemazine
CAS 108014-19-3 · C18H19N3S
01Identity
Identifiers and names for this exact compound. Empty fields are left unassigned.
| Lazychem ID | LC-21161 |
|---|---|
| PubChem CID | 10403087 |
| Name | N-Desmethyl cyamemazine |
| CAS RN | 108014-19-3 |
| Molecular formula | C18H19N3S |
| Molecular weight | 309.43 g/mol |
| IUPAC name | 10-(2-methyl-3-(methylamino)propyl)-10H-phenothiazine-2-carbonitrile |
| InChIKey | RJBGVEFRAZYALY-UHFFFAOYSA-N |
02Structure identifiers

Structure facts for this exact identity.
| Molecular formula | C18H19N3S |
|---|---|
| InChIKey | RJBGVEFRAZYALY-UHFFFAOYSA-N |
| Ring count | 3 |
| Defined stereocentres | 0 |
| Unassigned stereocentres | 1 |
| SMILES | CC(CNC)CN1C2=CC=CC=C2SC3=C1C=C(C=C3)C#N |
|---|---|
| InChI | InChI=1S/C18H19N3S/c1-13(11-20-2)12-21-15-5-3-4-6-17(15)22-18-8-7-14(10-19)9-16(18)21/h3-9,13,20H,11-12H2,1-2H3 |
03Stereochemistry
The published structure contains 0 defined and 1 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 108014-19-3 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 108014-19-3 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
06Names and relationships
Associated parent compound
Cyamemazine
View API and impurity familyOther names
- 10H-Phenothiazine-2-carbonitrile, 10-[2-methyl-3-(methylamino)propyl]-
- N-Demethylcyamemazine Maleate
- 10-[2-METHYL-3-(METHYLAMINO)PROPYL]-10H-PHENOTHIAZINE-2-CARBONITRILE
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 10403087
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.
