- Calculated formula
- C15H18N4O4
- Candidate SMILES
- O=Nn1c(CCCC(=O)O)nc2cc(N3CCOCC3)ccc21
Chemical identity
Bendamustine Related Compound B
CAS 1228552-02-0 · C16H21N3O3
01Identity
Identifiers and names for this exact compound. Empty fields are left unassigned.
| Lazychem ID | LC-07837 |
|---|---|
| PubChem CID | 58030408 |
| Name | Bendamustine Related Compound B |
| CAS RN | 1228552-02-0 |
| Molecular formula | C16H21N3O3 |
| Molecular weight | 303.36 g/mol |
| IUPAC name | 4-(1-Methyl-5-morpholino-1H -benzimidazol-2-yl)butanoic acid |
| InChIKey | SEJQBOGHXQJRBF-UHFFFAOYSA-N |
02Structure identifiers

The parsed structure contains 3 rings, includes aromatic atoms, includes aliphatic carbon. These statements are calculated from the published structure string.
| Defined stereocentres | 0 |
|---|---|
| Unassigned stereocentres | 0 |
| Ring count | 3 |
| Secondary amines | 0 |
| Tertiary amines | 1 |
| N-methyl amine sites | 0 |
| SMILES | CN1C2=C(C=C(C=C2)N3CCOCC3)N=C1CCCC(=O)O |
|---|---|
| InChI | Not listed |
| Formula from structure | C16H21N3O3 |
| Molecular weight from structure | 303.36 g/mol |
03Possible N-nitroso structures
Shown for structural screening only. These candidates are not confirmed impurities, formation predictions or analytical findings.
Interpretation: A structural alert alone does not establish that a nitrosamine forms. Evaluate nitrite sources, amine reagents, pH, temperature, process sequence, purge and analytical evidence.
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 | CAS 1228552-02-0 has no exact match in the reviewed published schedule. |
|---|---|---|
| SCOMET | NO EXACT REVIEWED CAS MATCH | CAS 1228552-02-0 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
05Names and relationships
Associated parent compound
Bendamustine
View API and impurity familyOther names
- Bendamustine Related Compound B (free base)
- 4-(1-Methyl-5-morpholino-1H-benzo[d]imidazol-2-yl)butanoic acid
- 1228552-02-0
- Bendamustine Ether Impurity
- 4-(1-methyl-5-morpholin-4-ylbenzimidazol-2-yl)butanoic acid
- 1-Methyl-5-(4-morpholinyl)-1H-benzimidazole-2-butanoic Acid
- Bendamustine Impurity 27
- Bendamustine USP Related Compound B
- SCHEMBL230067
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 58030408
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.
