
Chemical identity
Brivudine Impurity 4
CAS 61135-36-2 · C11H12Br2N2O5
01Identity
Identifiers and names for this exact compound. Empty fields are left unassigned.
| Lazychem ID | LC-08745 |
|---|---|
| PubChem CID | 511990 |
| Name | Brivudine Impurity 4 |
| CAS RN | 61135-36-2 |
| Molecular formula | C11H12Br2N2O5 |
| Molecular weight | 412.03 g/mol |
| IUPAC name | 5-(2,2-dibromovinyl)-1-((2R,4S,5R)-4-hydroxy-5-(hydroxymethyl)tetrahydrofuran-2-yl)pyrimidine-2,4(1H,3H)-dione |
| InChIKey | OGFRDDQDVKGOPG-LKEWCRSYSA-N |
02Structure identifiers

Structure facts for this exact identity.
| Molecular formula | C11H12Br2N2O5 |
|---|---|
| InChIKey | OGFRDDQDVKGOPG-LKEWCRSYSA-N |
| Ring count | 2 |
| Defined stereocentres | 3 |
| Unassigned stereocentres | 0 |
| SMILES | C1[C@@H]([C@H](O[C@H]1N2C=C(C(=O)NC2=O)C=C(Br)Br)CO)O |
|---|---|
| InChI | InChI=1S/C11H12Br2N2O5/c12-8(13)1-5-3-15(11(19)14-10(5)18)9-2-6(17)7(4-16)20-9/h1,3,6-7,9,16-17H,2,4H2,(H,14,18,19)/t6-,7+,9+/m0/s1 |
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
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.
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 | NOT FOUND IN REVIEWED ENTRIES | CAS 61135-36-2 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 61135-36-2 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
05Names and relationships
Associated parent compound
Brivudine
View API and impurity familyOther names
No synonyms are listed.
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 511990
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.
