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Record Information
Version2.0
Created at2022-09-10 05:28:57 UTC
Updated at2022-09-10 05:28:58 UTC
NP-MRD IDNP0296098
Secondary Accession NumbersNone
Natural Product Identification
Common Namephenolphthalein
DescriptionPhenolphthalein, also known as modane or laxatone, belongs to the class of organic compounds known as benzofuranones. These are organic compounds containing a benzene ring fused to a furanone. Phenolphthalein is a drug which is used for over a century as a laxative. Phenolphthalein is an extremely weak basic (essentially neutral) compound (based on its pKa). Phenolphthalein is formally rated as a possible carcinogen (by IARC 2B) and is also a potentially toxic compound. Phenolphthalein adopts four different states in aqueous solution: Under strongly acidic conditions, it exists in protonated form (HIn+), providing an orange coloration. Phenolphthalein can be synthesized by condensation of phthalic anhydride with two equivalents of phenol under acidic conditions (hence the name). phenolphthalein is found in Caragana conferta. It was discovered in 1871 by Adolf von Baeyer.
Structure
Thumb
Synonyms
ValueSource
3,3-Bis(4-hydroxyphenyl)phthalideKegg
ModaneKegg
LaxatoneMeSH
Feen-a-mintMeSH
LaxettesMeSH
Ex-laxMeSH
Ap-la-dayMeSH
ThalinolMeSH
Mentholatum brand OF phenolphthaleinMeSH
Novartis brand OF phenolphthaleinMeSH
Schering-plough brand OF phenolphthaleinMeSH
manesco Brand OF phenolphthaleinMeSH
Key brand OF phenolphthaleinMeSH
Thompson brand OF phenolphthaleinMeSH
Chemical FormulaC20H14O4
Average Mass318.3228 Da
Monoisotopic Mass318.08921 Da
IUPAC Name3,3-bis(4-hydroxyphenyl)-1,3-dihydro-2-benzofuran-1-one
Traditional Namephenolphthalein
CAS Registry NumberNot Available
SMILES
OC1=CC=C(C=C1)C1(OC(=O)C2=CC=CC=C12)C1=CC=C(O)C=C1
InChI Identifier
InChI=1S/C20H14O4/c21-15-9-5-13(6-10-15)20(14-7-11-16(22)12-8-14)18-4-2-1-3-17(18)19(23)24-20/h1-12,21-22H
InChI KeyKJFMBFZCATUALV-UHFFFAOYSA-N
Experimental Spectra
Spectrum TypeDescriptionDepositor EmailDepositor OrganizationDepositorDeposition DateView
1D NMR1H NMR Spectrum (1D, 90 MHz, DMSO-d6, experimental)Wishart LabWishart LabDavid Wishart2021-06-20View Spectrum
1D NMR13C NMR Spectrum (1D, 15.09 MHz, DMSO-d6, experimental)Wishart LabWishart LabDavid Wishart2021-06-20View Spectrum
Predicted Spectra
Spectrum TypeDescriptionDepositor IDDepositor OrganizationDepositorDeposition DateView
1D NMR13C NMR Spectrum (1D, 25 MHz, H2O, predicted)Wishart LabWishart LabDavid Wishart2021-06-20View Spectrum
1D NMR1H NMR Spectrum (1D, 100 MHz, H2O, predicted)Wishart LabWishart LabDavid Wishart2021-06-20View Spectrum
1D NMR13C NMR Spectrum (1D, 252 MHz, H2O, predicted)Wishart LabWishart LabDavid Wishart2021-06-20View Spectrum
1D NMR1H NMR Spectrum (1D, 1000 MHz, H2O, predicted)Wishart LabWishart LabDavid Wishart2021-06-20View Spectrum
1D NMR13C NMR Spectrum (1D, 50 MHz, H2O, predicted)Wishart LabWishart LabDavid Wishart2021-06-20View Spectrum
1D NMR1H NMR Spectrum (1D, 200 MHz, H2O, predicted)Wishart LabWishart LabDavid Wishart2021-06-20View Spectrum
1D NMR13C NMR Spectrum (1D, 75 MHz, H2O, predicted)Wishart LabWishart LabDavid Wishart2021-06-20View Spectrum
1D NMR1H NMR Spectrum (1D, 300 MHz, H2O, predicted)Wishart LabWishart LabDavid Wishart2021-06-20View Spectrum
1D NMR13C NMR Spectrum (1D, 101 MHz, H2O, predicted)Wishart LabWishart LabDavid Wishart2021-06-20View Spectrum
1D NMR1H NMR Spectrum (1D, 400 MHz, H2O, predicted)Wishart LabWishart LabDavid Wishart2021-06-20View Spectrum
1D NMR13C NMR Spectrum (1D, 126 MHz, H2O, predicted)Wishart LabWishart LabDavid Wishart2021-06-20View Spectrum
1D NMR1H NMR Spectrum (1D, 500 MHz, H2O, predicted)Wishart LabWishart LabDavid Wishart2021-06-20View Spectrum
1D NMR13C NMR Spectrum (1D, 151 MHz, H2O, predicted)Wishart LabWishart LabDavid Wishart2021-06-20View Spectrum
1D NMR1H NMR Spectrum (1D, 600 MHz, H2O, predicted)Wishart LabWishart LabDavid Wishart2021-06-20View Spectrum
1D NMR13C NMR Spectrum (1D, 176 MHz, H2O, predicted)Wishart LabWishart LabDavid Wishart2021-06-20View Spectrum
1D NMR1H NMR Spectrum (1D, 700 MHz, H2O, predicted)Wishart LabWishart LabDavid Wishart2021-06-20View Spectrum
1D NMR13C NMR Spectrum (1D, 201 MHz, H2O, predicted)Wishart LabWishart LabDavid Wishart2021-06-20View Spectrum
1D NMR1H NMR Spectrum (1D, 800 MHz, H2O, predicted)Wishart LabWishart LabDavid Wishart2021-06-20View Spectrum
1D NMR13C NMR Spectrum (1D, 226 MHz, H2O, predicted)Wishart LabWishart LabDavid Wishart2021-06-20View Spectrum
1D NMR1H NMR Spectrum (1D, 900 MHz, H2O, predicted)Wishart LabWishart LabDavid Wishart2021-06-20View Spectrum
Chemical Shift Submissions
Not Available
Species
Species of Origin
Species NameSourceReference
Caragana confertaLOTUS Database
Chemical Taxonomy
Description Belongs to the class of organic compounds known as benzofuranones. These are organic compounds containing a benzene ring fused to a furanone.
KingdomOrganic compounds
Super ClassOrganoheterocyclic compounds
ClassBenzofurans
Sub ClassBenzofuranones
Direct ParentBenzofuranones
Alternative Parents
Substituents
  • Benzofuranone
  • Phthalide
  • Isobenzofuranone
  • Isocoumaran
  • Phenol
  • 1-hydroxy-2-unsubstituted benzenoid
  • Benzenoid
  • Monocyclic benzene moiety
  • Lactone
  • Carboxylic acid ester
  • Oxacycle
  • Monocarboxylic acid or derivatives
  • Carboxylic acid derivative
  • Hydrocarbon derivative
  • Organooxygen compound
  • Organic oxide
  • Organic oxygen compound
  • Aromatic heteropolycyclic compound
Molecular FrameworkAromatic heteropolycyclic compounds
External Descriptors
Physical Properties
StateNot Available
Experimental Properties
PropertyValueReference
Melting PointNot AvailableNot Available
Boiling PointNot AvailableNot Available
Water SolubilityNot AvailableNot Available
LogPNot AvailableNot Available
Predicted Properties
PropertyValueSource
logP4.41ALOGPS
logP4.35ChemAxon
logS-4.5ALOGPS
pKa (Strongest Acidic)9.16ChemAxon
pKa (Strongest Basic)-6ChemAxon
Physiological Charge0ChemAxon
Hydrogen Acceptor Count3ChemAxon
Hydrogen Donor Count2ChemAxon
Polar Surface Area66.76 ŲChemAxon
Rotatable Bond Count2ChemAxon
Refractivity91.04 m³·mol⁻¹ChemAxon
Polarizability32.65 ųChemAxon
Number of Rings4ChemAxon
BioavailabilityYesChemAxon
Rule of FiveYesChemAxon
Ghose FilterYesChemAxon
Veber's RuleNoChemAxon
MDDR-like RuleNoChemAxon
HMDB IDNot Available
DrugBank IDDB04824
Phenol Explorer Compound IDNot Available
FoodDB IDNot Available
KNApSAcK IDNot Available
Chemspider IDNot Available
KEGG Compound IDC14286
BioCyc IDNot Available
BiGG IDNot Available
Wikipedia LinkPhenolphthalein
METLIN IDNot Available
PubChem Compound4764
PDB IDNot Available
ChEBI IDNot Available
Good Scents IDNot Available
References
General References
  1. LOTUS database [Link]