Record Information
Version1.0
Creation Date2016-05-20 16:11:00 UTC
Update Date2016-11-09 01:15:19 UTC
Accession NumberCHEM016017
Identification
Common NameHydralazine
ClassSmall Molecule
DescriptionOriginally developed in the 1950s as a malaria treatment, hydralazine showed antihypertensive ability and was soon repurposed. Hydralazine is a hydrazine derivative vasodilator used alone or as adjunct therapy in the treatment of hypertension and only as adjunct therapy in the treatment of heart failure. Hydralazine is no longer a first line therapy for these indications since the development of newer antihypertensive medications. Hydralazine was FDA approved on 15 January 1953.
Contaminant Sources
  • HMDB Contaminants - Urine
  • IARC Carcinogens Group 3
  • STOFF IDENT Compounds
Contaminant TypeNot Available
Chemical Structure
Thumb
Synonyms
ValueSource
(1Z)-1(2H)-Phthalazinone hydrazoneChEBI
(2H)-Phthalazinone hydrazoneChEBI
1-HydrazinophthalazineChEBI
1-PhthalazinylhydrazineChEBI
6-HydralazineChEBI
HidralazinaChEBI
HydralazinChEBI
HydralazinumChEBI
HydrallazineChEBI
HydrazinophthalazineChEBI
Hydrazone 1(2H)-phthalazinoneChEBI
HypophthalinChEBI
IdralazinaChEBI
Phthalazin-1-ylhydrazineChEBI
HidralKegg
Hydralazine hydrochlorideHMDB
NepresolHMDB
ApressinHMDB
ApressolineHMDB
Hydralazine mono hydrochlorideHMDB
Hydralazine mono-hydrochlorideHMDB
HydrallazinHMDB
Hydrochloride, hydralazineHMDB
mono-Hydrochloride, hydralazineHMDB
ApresolineHMDB
Chemical FormulaC8H8N4
Average Molecular Mass160.176 g/mol
Monoisotopic Mass160.075 g/mol
CAS Registry Number86-54-4
IUPAC Name1-hydrazinylphthalazine
Traditional Namehydralazine
SMILESNNC1=NN=CC2=CC=CC=C12
InChI IdentifierInChI=1S/C8H8N4/c9-11-8-7-4-2-1-3-6(7)5-10-12-8/h1-5H,9H2,(H,11,12)
InChI KeyRPTUSVTUFVMDQK-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
  • Carboxylic acid amidrazone
  • Azacycle
  • Hydrazone
  • Organic nitrogen compound
  • Organopnictogen compound
  • Hydrocarbon derivative
  • Organonitrogen compound
  • 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 Solubility2.61 g/LALOGPS
logP0.66ALOGPS
logP0.75ChemAxon
logS-1.8ALOGPS
pKa (Strongest Acidic)17.69ChemAxon
pKa (Strongest Basic)6.4ChemAxon
Physiological Charge0ChemAxon
Hydrogen Acceptor Count4ChemAxon
Hydrogen Donor Count2ChemAxon
Polar Surface Area63.83 ŲChemAxon
Rotatable Bond Count1ChemAxon
Refractivity50.23 m³·mol⁻¹ChemAxon
Polarizability16.06 ųChemAxon
Number of Rings2ChemAxon
Bioavailability1ChemAxon
Rule of FiveYesChemAxon
Ghose FilterYesChemAxon
Veber's RuleNoChemAxon
MDDR-like RuleNoChemAxon
Spectra
Spectra
Spectrum TypeDescriptionSplash KeyView
Predicted GC-MSPredicted GC-MS Spectrum - GC-MS (Non-derivatized) - 70eV, Positivesplash10-01q9-1900000000-f91e3313037f100cda4aSpectrum
Predicted GC-MSPredicted GC-MS Spectrum - GC-MS (Non-derivatized) - 70eV, PositiveNot AvailableSpectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 10V, Positivesplash10-03di-0900000000-8b7f181371fbed1e004cSpectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 20V, Positivesplash10-03e9-0900000000-8e1028367f84d64f9c73Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 40V, Positivesplash10-0f89-3900000000-324287ae696d06b87174Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 10V, Negativesplash10-0a4i-0900000000-a3afccefb2246e5901f0Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 20V, Negativesplash10-0560-0900000000-7b01083726dab57d5322Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 40V, Negativesplash10-0a59-1900000000-15fc53aed0fa9d04b4d3Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 10V, Positivesplash10-03di-0900000000-86317c6fb29f228114abSpectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 20V, Positivesplash10-03xu-4900000000-7990b6c5790e6ba5beaeSpectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 40V, Positivesplash10-000i-9000000000-c0eb36379ffd59449206Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 10V, Negativesplash10-0a4i-0900000000-ac294195ce6174807530Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 20V, Negativesplash10-004i-0900000000-1ead11198d84b2fa9185Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 40V, Negativesplash10-0ufr-4900000000-48281db360c4a9ee1de6Spectrum
1D NMR1H NMR SpectrumNot AvailableSpectrum
1D NMR13C NMR SpectrumNot AvailableSpectrum
1D NMR1H NMR SpectrumNot AvailableSpectrum
1D NMR13C NMR SpectrumNot AvailableSpectrum
1D NMR1H NMR SpectrumNot AvailableSpectrum
1D NMR13C NMR SpectrumNot AvailableSpectrum
1D NMR1H NMR SpectrumNot AvailableSpectrum
1D NMR13C NMR SpectrumNot AvailableSpectrum
1D NMR1H NMR SpectrumNot AvailableSpectrum
1D NMR13C NMR SpectrumNot AvailableSpectrum
1D NMR1H NMR SpectrumNot AvailableSpectrum
1D NMR13C NMR SpectrumNot AvailableSpectrum
1D NMR1H NMR SpectrumNot AvailableSpectrum
1D NMR13C NMR SpectrumNot AvailableSpectrum
1D NMR1H NMR SpectrumNot AvailableSpectrum
1D NMR13C NMR SpectrumNot AvailableSpectrum
1D NMR1H NMR SpectrumNot AvailableSpectrum
1D NMR13C NMR SpectrumNot AvailableSpectrum
1D NMR1H NMR SpectrumNot AvailableSpectrum
1D NMR13C NMR SpectrumNot AvailableSpectrum
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 IDDB01275
HMDB IDHMDB0015400
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 ID3511
ChEBI ID5775
PubChem Compound ID3637
Kegg Compound IDC07040
YMDB IDNot Available
ECMDB IDNot Available
References
Synthesis ReferenceNot Available
MSDSNot Available
General References
1. Kandler MR, Mah GT, Tejani AM, Stabler SN: Hydralazine for essential hypertension. Cochrane Database Syst Rev. 2010 Aug 4;(8):CD004934. doi: 10.1002/14651858.CD004934.pub3.
2. https://www.ncbi.nlm.nih.gov/pubmed/?term=808562