Nitrazepam
A 1,4-benzodiazepinone that is 1,3-dihydro-2H-1,4-benzodiazepin-2-one which is substituted at positions 5 and 7 by phenyl and nitro groups, respectively. It is used as a hypnotic for the short-term management of insomnia and for the treatment of epileptic spasms in infants (West's syndrome). — ChEBI
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Identity & molecular properties
Source-linked values| CAS number | 146-22-5 | ChEBI ↗ |
| Molecular formula | C15H11N3O3 | ChEBI ↗ |
| Molar mass | 281.271 g/mol | ChEBI ↗ |
| Monoisotopic mass | 281.08004 Da | ChEBI ↗ |
| Formal charge | 0 | ChEBI ↗ |
| ChEBI identifier | CHEBI:7581 | ChEBI ↗ |
Cross-source molecular data
PubChem| Molar mass | 281.27 g/mol | PubChem ↗ |
| Exact mass | 281.08004122 Da | PubChem ↗ |
| Computed XLogP | 2.2 | PubChem ↗ |
| Topological polar surface area (Ų) | 87.3 | PubChem ↗ |
| H-bond donors | 1 | PubChem ↗ |
| H-bond acceptors | 4 | PubChem ↗ |
| Rotatable bonds | 1 | PubChem ↗ |
PubChem computed values are shown separately from the ChEBI record. An exact InChIKey match was used to connect the records. Molecular descriptors do not describe a supplied product’s purity, particle size or performance.
Names & structural identifiers
Copy any identifiernitrazepam7-nitro-5-phenyl-1,3-dihydro-2H-1,4-benzodiazepin-2-oneKJONHKAYOJNZEC-UHFFFAOYSA-NO=C1CN=C(c2ccccc2)c2cc([N+](=O)[O-])ccc2N1InChI=1S/C15H11N3O3/c19-14-9-16-15(10-4-2-1-3-5-10)12-8-11(18(20)21)6-7-13(12)17-14/h1-8H,9H2,(H,17,19)Names & synonyms
Names are supplied by ChEBI. Trade names and related synonyms may describe a broader product context.
Classification & relationships
ChEBI ontologyRoles recorded in ChEBI
Database role annotations describe reported biological or chemical roles; they are not product approvals or recommendations for use.
Mass ↔ amount of substance
Calculated from sourced massUses 281.271 g/mol from ChEBI. Assumes the substance described by this record; no purity or concentration correction is applied.
Elemental composition
Theoretical mass fractionsCONHCalculated theoretical mass fractions from the reported formula and PubChem periodic-table atomic masses. These are not assay or purity results.
Research & patent references
Selected source associationsSources & record history
Checked 27 Sep 2026Release 255, 9 September 2026. ChEBI three-star (manually annotated) source entry. View original record ↗ · CC BY 4.0
PubCAS formats source data, connects references and computes explicitly labelled conversions. CAS cross-references are supplied by ChEBI; they do not constitute CAS verification or endorsement.