
Chemical identity
Lurbinectedin Acid Impurity
CAS not listed · C41H46N4O11S
01Identity
Identifiers and names for this exact compound. Empty fields are left unassigned.
| Lazychem ID | LC-31993 |
|---|---|
| PubChem CID | 177831525 |
| Name | Lurbinectedin Acid Impurity |
| CAS RN | Not listed |
| Molecular formula | C41H46N4O11S |
| Molecular weight | 802.9 g/mol |
| IUPAC name | (R)-1-((((6R, 6aR, 7R, 13S, 14S, 16R)-5-acetoxy-8, 14-dihydroxy-16-(hydroxymethyl)-9-methoxy-4, 10, 17-trimethyl-6a, 7, 12, 13, 14, 16-hexahydro-6H-7, 13-epiminobenzo[4, 5]azocino[1, 2-b][1, 3]dioxolo[4, 5-h]isoquinolin-6-yl)thio)methyl)-6-methoxy-2, 3, 4, 9-tetrahydro-1H-pyrido[3, 4-b]indole-1-carboxylic acid |
| InChIKey | APUDUUCRUKXFEG-HWTBNCOESA-N |
02Structure identifiers

Structure facts for this exact identity.
| Molecular formula | C41H46N4O11S |
|---|---|
| InChIKey | APUDUUCRUKXFEG-HWTBNCOESA-N |
| Ring count | 9 |
| Defined stereocentres | 7 |
| Unassigned stereocentres | 0 |
| SMILES | CC1=CC2=C([C@@H]3[C@@H]4[C@@H](C5=C(C(=C6C(=C5[C@@H](N4[C@H]([C@H](C2)N3C)O)CO)OCO6)C)OC(=O)C)SC[C@@]7(C8=C(CCN7)C9=C(N8)C=CC(=C9)OC)C(=O)O)C(=C1OC)O |
|---|---|
| InChI | InChI=1S/C41H46N4O11S/c1-17-11-20-12-25-39(49)45-26(14-46)28-29(34(56-19(3)47)18(2)35-36(28)55-16-54-35)37(31(45)30(44(25)4)27(20)32(48)33(17)53-6)57-15-41(40(50)51)38-22(9-10-42-41)23-13-21(52-5)7-8-24(23)43-38/h7-8,11,13,25-26,30-31,37,39,42-43,46,48-49H,9-10,12,14-16H2,1-6H3,(H,50,51)/t25-,26-,30+,31+,37+,39-,41+/m0/s1 |
03Stereochemistry
The published structure contains 7 defined and 0 unassigned tetrahedral stereocentres. 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 | No CAS number is available for an exact comparison. Generic and analogue entries were not evaluated. |
|---|---|---|
| SCOMET | NOT FOUND IN REVIEWED CAS ENTRIES | No CAS number is available for an exact comparison. 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
Lurbinectedin
View API and impurity familyOther names
- Acid Impurity of Lurbinectedin
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 177831525
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.
