
Chemical identity
Darunavir Impurity 13
CAS not listed · C25H35N3O7S
01Identity
Identifiers and names for this exact compound. Empty fields are left unassigned.
| Lazychem ID | LC-45567 |
|---|---|
| PubChem CID | 12071058 |
| Name | Darunavir Impurity 13 |
| CAS RN | Not listed |
| Molecular formula | C25H35N3O7S |
| Molecular weight | 521.6 g/mol |
| IUPAC name | tert-butyl N-[(2S,3S)-3-hydroxy-4-[2-methylpropyl-(4-nitrophenyl)sulfonylamino]-1-phenylbutan-2-yl]carbamate |
| InChIKey | CQGKCZKCWMWXQP-GOTSBHOMSA-N |
02Structure identifiers

The parsed structure contains 2 rings, includes aromatic atoms, includes aliphatic carbon, has 2 defined stereocentres, contains a nitro substructure. These statements are calculated from the published structure string.
| Defined stereocentres | 2 |
|---|---|
| Unassigned stereocentres | 0 |
| Ring count | 2 |
| Secondary amines | 0 |
| Tertiary amines | 0 |
| N-methyl amine sites | 0 |
| SMILES | CC(C)CN(C[C@@H]([C@H](CC1=CC=CC=C1)NC(=O)OC(C)(C)C)O)S(=O)(=O)C2=CC=C(C=C2)[N+](=O)[O-] |
|---|---|
| InChI | Not listed |
| Formula from structure | C25H35N3O7S |
| Molecular weight from structure | 521.6 g/mol |
03Stereochemistry
The published structure contains 2 defined and 0 unassigned tetrahedral stereocentres. The exact wedge and dash depiction is shown above.
Published same-connectivity configurations
3 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.

![Two-dimensional chemical structure of N-[(1R,2S)-2-Hydroxy-3-[(2-methylpropyl)[(4-nitrophenyl)sulfonyl]amino]-1-(phenylmethyl)propyl]carbamic Acid 1,1-Dimethylethyl Ester (Darunavir Impurity)](/structures/pubchem/60170214-300.png)
N-[(1R,2S)-2-Hydroxy-3-[(2-methylpropyl)[(4-nitrophenyl)sulfonyl]amino]-1-(phenylmethyl)propyl]carbamic Acid 1,1-Dimethylethyl Ester (Darunavir Impurity)
CAS not listed
CQGKCZKCWMWXQP-PKTZIBPZSA-N
2 defined, 0 unassigned centres
![Two-dimensional chemical structure of N-[(1S,2S)-2-Hydroxy-3-[(2-methylpropyl)[(4-nitrophenyl)sulfonyl]amino]-1-(phenylmethyl)propyl]carbamic Acid 1,1-Dimethylethyl Ester](/structures/pubchem/169442004-300.png)
N-[(1S,2S)-2-Hydroxy-3-[(2-methylpropyl)[(4-nitrophenyl)sulfonyl]amino]-1-(phenylmethyl)propyl]carbamic Acid 1,1-Dimethylethyl Ester
CAS not listed
CQGKCZKCWMWXQP-WCSIJFPASA-N
1 defined, 1 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 | No CAS number is available for an exact comparison. |
|---|---|---|
| SCOMET | NO EXACT REVIEWED CAS MATCH | No CAS number is available for an exact comparison. |
| 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
No parent compound is listed.
Other 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 12071058
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.
