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Chemical substance record

Nordazepam

1088-11-5C15H11ClN2O270.719 g/mol
Organic/Inorganic Small MoleculeChEBI source record

A 1,4-benzodiazepinone having phenyl and chloro substituents at positions 5 and 7 respectively; it has anticonvulsant, anxiolytic, muscle relaxant and sedative properties but is used primarily in the treatment of anxiety. — ChEBI

Safety references

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Identity & molecular properties

Source-linked values
CAS number1088-11-5ChEBI ↗
Molecular formulaC15H11ClN2OChEBI ↗
Molar mass270.719 g/molChEBI ↗
Monoisotopic mass270.05599 DaChEBI ↗
Formal charge0ChEBI ↗
ChEBI identifierCHEBI:111762ChEBI ↗

Cross-source molecular data

PubChem
Molar mass270.71 g/molPubChem ↗
Exact mass270.0559907 DaPubChem ↗
Computed XLogP2.9PubChem ↗
Topological polar surface area (Ų)41.5PubChem ↗
H-bond donors1PubChem ↗
H-bond acceptors2PubChem ↗
Rotatable bonds1PubChem ↗

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 identifier
nordazepam
7-chloro-5-phenyl-1,3-dihydro-2H-1,4-benzodiazepin-2-one
AKPLHCDWDRPJGD-UHFFFAOYSA-N
O=C1CN=C(c2ccccc2)c2cc(Cl)ccc2N1
InChI=1S/C15H11ClN2O/c16-11-6-7-13-12(8-11)15(17-9-14(19)18-13)10-4-2-1-3-5-10/h1-8H,9H2,(H,18,19)

Names & synonyms

7-chloro-5-phenyl-1,3-dihydro-2H-1,4-benzodiazepin-2-onenordazepamum

Names are supplied by ChEBI. Trade names and related synonyms may describe a broader product context.

Classification & relationships

ChEBI ontology
1,4-benzodiazepinoneChEBI parent class · 35500 ↗organochlorine compoundChEBI parent class · 36683 ↗
organochlorine compoundorganic heterocyclic compoundorganic molecular entity

Roles recorded in ChEBI

anxiolytic druganticonvulsantsedativeGABA modulatorhuman metabolite

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 mass
Equivalent amount
0.00369387 mol

Uses 270.719 g/mol from ChEBI. Assumes the substance described by this record; no purity or concentration correction is applied.

Elemental composition

Theoretical mass fractions
C
Carbon · 15 atoms
66.55%
Cl
Chlorine · 1 atom
13.09%
N
Nitrogen · 2 atoms
10.35%
O
Oxygen · 1 atom
5.91%
H
Hydrogen · 11 atoms
4.10%

Calculated 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 associations
Double-blind cross-over clinical comparison of two 2'-chloro benzodiazepines: 7-chloro-5-(2-chlorophenyl)-1,3-dihydro-2H-1,4-benzodiazepin-2-one (chlordesmethyldiazepam) versus 7-chloro-5-(o-chlorophenyl)-1,3-dihydro-3-hydroxy-2H-1,4-benzodiazepin-2-one (lorazepam) in neurotic anxiety. ↗Arzneimittel-Forschung · 1977 Feb · PMID 16622
On the hypnogenic and anticonvulsant activities of demethyldiazepam and chlordemethyldiazepam: time-effect relations. ↗The Journal of pharmacy and pharmacology · 1977 Aug · PMID 19604
BE620020 · Patent reference ↗Patent cross-reference supplied by ChEBI. Association alone does not establish claim scope.
DE1136709 · Patent reference ↗Patent cross-reference supplied by ChEBI. Association alone does not establish claim scope.
US3051701 · Patent reference ↗Patent cross-reference supplied by ChEBI. Association alone does not establish claim scope.
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Sources & record history

Checked 27 Sep 2026
EMBL-EBI ChEBI · CHEBI:111762

Release 255, 9 September 2026. ChEBI three-star (manually annotated) source entry. View original record ↗ · CC BY 4.0

NCBI PubChem · CID 2997 · retrieved 2026-09-27

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.

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