Record Information
Version1.0
Creation Date2016-05-22 04:50:03 UTC
Update Date2016-11-09 01:15:43 UTC
Accession NumberCHEM018007
Identification
Common NameHydralazine hydrochloride
ClassSmall Molecule
DescriptionThe hydrochloride salt of hydralazine; a direct-acting vasodilator that is used as an antihypertensive agent.
Contaminant Sources
  • ToxCast & Tox21 Chemicals
Contaminant TypeNot Available
Chemical Structure
Thumb
Synonyms
ValueSource
1(2H)-Phthalazinone hydrazone hydrochlorideChEBI
1-Hydrazinophthalazine hydrochlorideChEBI
1-Hydrazinophthalazine monohydrochlorideChEBI
Hydralazine chlorideChEBI
Hydralazine HCLChEBI
Hydralazine monohydrochlorideChEBI
Phthalazinone hydrazone monohydrochlorideChEBI
ApresolineKegg
ApressolineMeSH
ApressinMeSH
HydrazinophthalazineMeSH
HydralazineMeSH
HydrallazinMeSH
Hydralazine mono hydrochlorideMeSH
Hydralazine mono-hydrochlorideMeSH
NepresolMeSH
mono-Hydrochloride, hydralazineMeSH
Hydrochloride, hydralazineMeSH
Chemical FormulaC8H9ClN4
Average Molecular Mass196.637 g/mol
Monoisotopic Mass196.052 g/mol
CAS Registry Number304-20-1
IUPAC Name1-hydrazinylidene-1,2-dihydrophthalazine hydrochloride
Traditional Name1(2H)-phthalazinone hydrazone hydrochloride
SMILESCl.NN=C1NN=CC2=CC=CC=C12
InChI IdentifierInChI=1S/C8H8N4.ClH/c9-11-8-7-4-2-1-3-6(7)5-10-12-8;/h1-5H,9H2,(H,11,12);1H
InChI KeyZUXNZUWOTSUBMN-UHFFFAOYSA-N
Chemical Taxonomy
Description belongs to the class of organic compounds known as phthalazines. Phthalazines are compounds containing a phthalazine moiety, which consists of a benzene ring fused to a pyridazine, forming a 2,3-benzodiazine skeleton.
KingdomOrganic compounds
Super ClassOrganoheterocyclic compounds
ClassDiazanaphthalenes
Sub ClassBenzodiazines
Direct ParentPhthalazines
Alternative Parents
Substituents
  • Phthalazine
  • Imidolactam
  • Benzenoid
  • Pyridazine
  • Heteroaromatic compound
  • Azacycle
  • Organic nitrogen compound
  • Organopnictogen compound
  • Hydrocarbon derivative
  • Hydrochloride
  • Organonitrogen compound
  • Hydrazine derivative
  • Aromatic heteropolycyclic compound
Molecular FrameworkAromatic heteropolycyclic compounds
External Descriptors
Biological Properties
StatusDetected and Not Quantified
OriginNot Available
Cellular LocationsNot Available
Biofluid LocationsNot Available
Tissue LocationsNot Available
PathwaysNot Available
ApplicationsNot Available
Biological RolesNot Available
Chemical RolesNot Available
Physical Properties
StateNot Available
AppearanceNot Available
Experimental Properties
PropertyValue
Melting PointNot Available
Boiling PointNot Available
SolubilityNot Available
Predicted Properties
PropertyValueSource
Water Solubility1.59 g/LALOGPS
logP0.78ALOGPS
logP0.83ChemAxon
logS-2ALOGPS
pKa (Strongest Acidic)10.92ChemAxon
pKa (Strongest Basic)2.69ChemAxon
Physiological Charge0ChemAxon
Hydrogen Acceptor Count4ChemAxon
Hydrogen Donor Count2ChemAxon
Polar Surface Area62.77 ŲChemAxon
Rotatable Bond Count0ChemAxon
Refractivity59.33 m³·mol⁻¹ChemAxon
Polarizability16.09 ųChemAxon
Number of Rings2ChemAxon
Bioavailability1ChemAxon
Rule of FiveYesChemAxon
Ghose FilterYesChemAxon
Veber's RuleNoChemAxon
MDDR-like RuleNoChemAxon
Spectra
Spectra
Spectrum TypeDescriptionSplash KeyView
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 10V, Positivesplash10-0002-0900000000-1cf950a4a25ee0f3e453Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 20V, Positivesplash10-0002-0900000000-1cf950a4a25ee0f3e453Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 40V, Positivesplash10-0002-0900000000-1cf950a4a25ee0f3e453Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 10V, Negativesplash10-0002-0900000000-1d7c2bc15ebd1132c7ebSpectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 20V, Negativesplash10-0002-0900000000-1d7c2bc15ebd1132c7ebSpectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 40V, Negativesplash10-0002-0900000000-1d7c2bc15ebd1132c7ebSpectrum
Toxicity Profile
Route of ExposureNot Available
Mechanism of ToxicityNot Available
MetabolismNot Available
Toxicity ValuesNot Available
Lethal DoseNot Available
Carcinogenicity (IARC Classification)Not Available
Uses/SourcesNot Available
Minimum Risk LevelNot Available
Health EffectsNot Available
SymptomsNot Available
TreatmentNot Available
Concentrations
Not Available
DrugBank IDDBSALT000792
HMDB IDNot Available
FooDB IDNot Available
Phenol Explorer IDNot Available
KNApSAcK IDNot Available
BiGG IDNot Available
BioCyc IDNot Available
METLIN IDNot Available
PDB IDNot Available
Wikipedia LinkHydralazine
Chemspider IDNot Available
ChEBI ID31672
PubChem Compound ID9351
Kegg Compound IDNot Available
YMDB IDNot Available
ECMDB IDNot Available
References
Synthesis ReferenceNot Available
MSDSNot Available
General References
1. https://www.ncbi.nlm.nih.gov/pubmed/?term=808562