Pinazepam (CHEM003546)

Record Information
Version1.0
Creation Date2014-09-05 17:11:13 UTC
Update Date2026-05-14 19:32:21 UTC
Accession NumberCHEM003546
Identification
Common NamePinazepam
ClassSmall Molecule
Description
Pinazepam (marketed under the brand name Domar and Duna) is a drug which is a benzodiazepine. It possesses anxiolytic, anticonvulsant, sedative and skeletal muscle relaxant properties.
Contaminant Sources
  • T3DB toxins
Contaminant Type
  • Amide
  • Amine
  • Drug
  • Metabolite
  • Organic Compound
  • Organochloride
  • Synthetic Compound
Chemical Structure
MOLSDFPDBSMILESInChI
Synonyms
ValueSource
DomarKegg
7-Chloro-1-propargyl-5-phenyl-2H-1,4-benzodiazepin-2-oneHMDB
DunaHMDB
7-Chloro-5-phenyl-1-propargyl-1,4-benzodiazepin-2- oneHMDB
PropazepamHMDB
Tedec meiji brand OF pinazepamHMDB
Chemical FormulaC18H13ClN2O
Average Molecular Mass308.762 g/mol
Monoisotopic Mass308.072 g/mol
CAS Registry Number52463-83-9
IUPAC Name7-chloro-5-phenyl-1-(prop-2-yn-1-yl)-2,3-dihydro-1H-1,4-benzodiazepin-2-one
Traditional Namedomar
SMILESClC1=CC2=C(C=C1)N(CC#C)C(=O)CN=C2C1=CC=CC=C1
InChI IdentifierInChI=1S/C18H13ClN2O/c1-2-10-21-16-9-8-14(19)11-15(16)18(20-12-17(21)22)13-6-4-3-5-7-13/h1,3-9,11H,10,12H2
InChI KeyMFZOSKPPVCIFMT-UHFFFAOYSA-N
Chemical Taxonomy
Description Belongs to the class of organic compounds known as 1,4-benzodiazepines. These are organic compounds containing a benzene ring fused to a 1,4-azepine.
KingdomOrganic compounds
Super ClassOrganoheterocyclic compounds
ClassBenzodiazepines
Sub Class1,4-benzodiazepines
Direct Parent1,4-benzodiazepines
Alternative Parents
Substituents
  • 1,4-benzodiazepine
  • Alpha-amino acid or derivatives
  • Aryl chloride
  • Aryl halide
  • Monocyclic benzene moiety
  • Benzenoid
  • Tertiary carboxylic acid amide
  • Carboxamide group
  • Ketimine
  • Lactam
  • Azacycle
  • Organic 1,3-dipolar compound
  • Propargyl-type 1,3-dipolar organic compound
  • Acetylide
  • Carboxylic acid derivative
  • Hydrocarbon derivative
  • Organohalogen compound
  • Organic oxygen compound
  • Imine
  • Organochloride
  • Organic nitrogen compound
  • Carbonyl group
  • Organonitrogen compound
  • Organopnictogen compound
  • Organooxygen compound
  • Organic oxide
  • Aromatic heteropolycyclic compound
Molecular FrameworkAromatic heteropolycyclic compounds
External DescriptorsNot Available
Biological Properties
StatusDetected and Not Quantified
OriginExogenous
Cellular Locations
  • Membrane
Biofluid LocationsNot Available
Tissue LocationsNot Available
PathwaysNot Available
ApplicationsNot Available
Biological RolesNot Available
Chemical RolesNot Available
Physical Properties
StateSolid
AppearanceWhite powder.
Experimental Properties
PropertyValue
Melting Point141 °C
Boiling PointNot Available
SolubilityNot Available
Predicted Properties
PropertyValueSource
Water Solubility0.0092 g/LALOGPS
logP3.39ALOGPS
logP3.3ChemAxon
logS-4.5ALOGPS
pKa (Strongest Basic)2.89ChemAxon
Physiological Charge0ChemAxon
Hydrogen Acceptor Count2ChemAxon
Hydrogen Donor Count0ChemAxon
Polar Surface Area32.67 ŲChemAxon
Rotatable Bond Count2ChemAxon
Refractivity87.39 m³·mol⁻¹ChemAxon
Polarizability31.98 ųChemAxon
Number of Rings3ChemAxon
BioavailabilityYesChemAxon
Rule of FiveYesChemAxon
Ghose FilterYesChemAxon
Veber's RuleYesChemAxon
MDDR-like RuleNoChemAxon
Spectra
Spectra
Toxicity Profile
Route of ExposureNot Available
Mechanism of ToxicityBenzodiazepines bind nonspecifically to benzodiazepine receptors BNZ1, which mediates sleep, and BNZ2, which affects affects muscle relaxation, anticonvulsant activity, motor coordination, and memory. As benzodiazepine receptors are thought to be coupled to gamma-aminobutyric acid-A (GABAA) receptors, this enhances the effects of GABA by increasing GABA affinity for the GABA receptor. Binding of the inhibitory neurotransmitter GABA to the site opens the chloride channel, resulting in a hyperpolarized cell membrane that prevents further excitation of the cell.
MetabolismNot Available
Toxicity ValuesNot Available
Lethal DoseNot Available
Carcinogenicity (IARC Classification)No indication of carcinogenicity to humans (not listed by IARC).
Uses/SourcesNot Available
Minimum Risk LevelNot Available
Health EffectsNot Available
SymptomsNot Available
TreatmentGeneral supportive measures should be employed, along with intravenous fluids, and an adequate airway maintained. Hypotension may be combated by the use of norepinephrine or metaraminol. Dialysis is of limited value. Flumazenil (Anexate) is a competitive benzodiazepine receptor antagonist that can be used as an antidote for benzodiazepine overdose. In particular, flumazenil is very effective at reversing the CNS depression associated with benzodiazepines but is less effective at reversing respiratory depression. Its use, however, is controversial as it has numerous contraindications. It is contraindicated in patients who are on long-term benzodiazepines, those who have ingested a substance that lowers the seizure threshold, or in patients who have tachycardia or a history of seizures. As a general rule, medical observation and supportive care are the mainstay of treatment of benzodiazepine overdose. Although benzodiazepines are absorbed by activated charcoal, gastric decontamination with activated charcoal is not beneficial in pure benzodiazepine overdose as the risk of adverse effects often outweigh any potential benefit from the procedure. It is recommended only if benzodiazepines have been taken in combination with other drugs that may benefit from decontamination. Gastric lavage (stomach pumping) or whole bowel irrigation are also not recommended.
Concentrations
Not Available
External Links
DrugBank IDDB13335
HMDB IDHMDB0041988
FooDB IDNot Available
Phenol Explorer IDNot Available
KNApSAcK IDNot Available
BiGG IDNot Available
BioCyc IDNot Available
METLIN IDNot Available
PDB IDNot Available
Wikipedia LinkPinazepam
Chemspider ID36899
ChEBI IDNot Available
PubChem Compound ID40391
Kegg Compound IDNot Available
YMDB IDNot Available
ECMDB IDNot Available
References
Synthesis ReferenceNot Available
MSDSNot Available
General References