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Record Information
Version5.0
StatusExpected but not Quantified
Creation Date2012-09-06 15:16:52 UTC
Update Date2022-03-07 02:52:05 UTC
HMDB IDHMDB0015691
Secondary Accession Numbers
  • HMDB15691
Metabolite Identification
Common NameDimethindene
DescriptionDimethindene, also known as fenistil or forhistal, belongs to the class of organic compounds known as indenes and isoindenes. Indenes and isoindenes are compounds containing an indene moiety(which consists of a cyclopentadiene fused to a benzene ring), or a isoindene moiety (which consists of a cyclopentadiene fused to cyclohexadiene ring). As with other antihistaminic drugs, overdosage can produce the following symptoms: CNS depression accompanied by drowsiness (especially in adults), CNS stimulation and antimuscarinic effects (especially in children) including the following: excitation, ataxia, hallucinations, tonic or clonic spasms, mydriasis, dryness of the mouth, redness of the face, urine retention, fever and tachycardia. Dimethindene is a very strong basic compound (based on its pKa). In humans, dimethindene is involved in dimetindene h1-antihistamine action. Dimethindene is only found in individuals that have used or taken this drug. Dimethindene is a selective histamine H1 antagonist and binds to the histamine H1 receptor. Blood hypotension is also possible (R)-(-)-enantiomer is the eutomer (responsible for bioactivity) for histamine H1 receptor binding.
Structure
Data?1582753324
Synonyms
ValueSource
(+/-)-dimetahindeneHMDB
DimethylpyrindeneHMDB
Dimethindene maleateHMDB
DimetindeneHMDB
Maleate, dimethindeneHMDB
DimethpyrindeneHMDB
FenistilHMDB
ForhistalHMDB
Novartis brand OF dimethindene maleateHMDB
Chemical FormulaC20H24N2
Average Molecular Weight292.418
Monoisotopic Molecular Weight292.193948778
IUPAC Namedimethyl(2-{3-[1-(pyridin-2-yl)ethyl]-1H-inden-2-yl}ethyl)amine
Traditional Namedimethindene
CAS Registry Number5636-83-9
SMILES
CC(C1=C(CCN(C)C)CC2=CC=CC=C12)C1=CC=CC=N1
InChI Identifier
InChI=1S/C20H24N2/c1-15(19-10-6-7-12-21-19)20-17(11-13-22(2)3)14-16-8-4-5-9-18(16)20/h4-10,12,15H,11,13-14H2,1-3H3
InChI KeyMVMQESMQSYOVGV-UHFFFAOYSA-N
Chemical Taxonomy
Description Belongs to the class of organic compounds known as indenes and isoindenes. Indenes and isoindenes are compounds containing an indene moiety(which consists of a cyclopentadiene fused to a benzene ring), or a isoindene moiety (which consists of a cyclopentadiene fused to cyclohexadiene ring).
KingdomOrganic compounds
Super ClassBenzenoids
ClassIndenes and isoindenes
Sub ClassNot Available
Direct ParentIndenes and isoindenes
Alternative Parents
Substituents
  • Indene
  • Pyridine
  • Heteroaromatic compound
  • Tertiary aliphatic amine
  • Tertiary amine
  • Azacycle
  • Organoheterocyclic compound
  • Organic nitrogen compound
  • Organopnictogen compound
  • Hydrocarbon derivative
  • Organonitrogen compound
  • Amine
  • Aromatic heteropolycyclic compound
Molecular FrameworkAromatic heteropolycyclic compounds
External DescriptorsNot Available
Ontology
Physiological effectNot Available
Disposition
Process
RoleNot Available
Physical Properties
StateSolid
Experimental Molecular Properties
PropertyValueReference
Melting PointNot AvailableNot Available
Boiling PointNot AvailableNot Available
Water SolubilityNot AvailableNot Available
LogPNot AvailableNot Available
Experimental Chromatographic PropertiesNot Available
Predicted Molecular Properties
PropertyValueSource
Water Solubility0.038 g/LALOGPS
logP4.03ALOGPS
logP3.74ChemAxon
logS-3.9ALOGPS
pKa (Strongest Acidic)18.93ChemAxon
pKa (Strongest Basic)9.7ChemAxon
Physiological Charge1ChemAxon
Hydrogen Acceptor Count2ChemAxon
Hydrogen Donor Count0ChemAxon
Polar Surface Area16.13 ŲChemAxon
Rotatable Bond Count5ChemAxon
Refractivity93.57 m³·mol⁻¹ChemAxon
Polarizability34.9 ųChemAxon
Number of Rings3ChemAxon
BioavailabilityYesChemAxon
Rule of FiveYesChemAxon
Ghose FilterYesChemAxon
Veber's RuleYesChemAxon
MDDR-like RuleNoChemAxon
Predicted Chromatographic Properties

Predicted Collision Cross Sections

PredictorAdduct TypeCCS Value (Å2)Reference
DarkChem[M+H]+170.08231661259
DarkChem[M-H]-167.41331661259
DeepCCS[M-2H]-202.3730932474
DeepCCS[M+Na]+177.93530932474
AllCCS[M+H]+171.132859911
AllCCS[M+H-H2O]+167.532859911
AllCCS[M+NH4]+174.432859911
AllCCS[M+Na]+175.332859911
AllCCS[M-H]-181.332859911
AllCCS[M+Na-2H]-181.132859911
AllCCS[M+HCOO]-181.032859911

Predicted Retention Times

Underivatized

Chromatographic MethodRetention TimeReference
Measured using a Waters Acquity ultraperformance liquid chromatography (UPLC) ethylene-bridged hybrid (BEH) C18 column (100 mm × 2.1 mm; 1.7 μmparticle diameter). Predicted by Afia on May 17, 2022. Predicted by Afia on May 17, 2022.5.92 minutes32390414
Predicted by Siyang on May 30, 202210.8616 minutes33406817
Predicted by Siyang using ReTip algorithm on June 8, 20222.34 minutes32390414
AjsUoB = Accucore 150 Amide HILIC with 10mM Ammonium Formate, 0.1% Formic Acid43.7 seconds40023050
Fem_Long = Waters ACQUITY UPLC HSS T3 C18 with Water:MeOH and 0.1% Formic Acid1385.7 seconds40023050
Fem_Lipids = Ascentis Express C18 with (60:40 water:ACN):(90:10 IPA:ACN) and 10mM NH4COOH + 0.1% Formic Acid218.8 seconds40023050
Life_Old = Waters ACQUITY UPLC BEH C18 with Water:(20:80 acetone:ACN) and 0.1% Formic Acid172.9 seconds40023050
Life_New = RP Waters ACQUITY UPLC HSS T3 C18 with Water:(30:70 MeOH:ACN) and 0.1% Formic Acid175.5 seconds40023050
RIKEN = Waters ACQUITY UPLC BEH C18 with Water:ACN and 0.1% Formic Acid107.7 seconds40023050
Eawag_XBridgeC18 = XBridge C18 3.5u 2.1x50 mm with Water:MeOH and 0.1% Formic Acid365.4 seconds40023050
BfG_NTS_RP1 =Agilent Zorbax Eclipse Plus C18 (2.1 mm x 150 mm, 3.5 um) with Water:ACN and 0.1% Formic Acid444.3 seconds40023050
HILIC_BDD_2 = Merck SeQuant ZIC-HILIC with ACN(0.1% formic acid):water(16 mM ammonium formate)395.9 seconds40023050
UniToyama_Atlantis = RP Waters Atlantis T3 (2.1 x 150 mm, 5 um) with ACN:Water and 0.1% Formic Acid931.1 seconds40023050
BDD_C18 = Hypersil Gold 1.9µm C18 with Water:ACN and 0.1% Formic Acid148.2 seconds40023050
UFZ_Phenomenex = Kinetex Core-Shell C18 2.6 um, 3.0 x 100 mm, Phenomenex with Water:MeOH and 0.1% Formic Acid1162.6 seconds40023050
SNU_RIKEN_POS = Waters ACQUITY UPLC BEH C18 with Water:ACN and 0.1% Formic Acid232.7 seconds40023050
RPMMFDA = Waters ACQUITY UPLC BEH C18 with Water:ACN and 0.1% Formic Acid326.0 seconds40023050
MTBLS87 = Merck SeQuant ZIC-pHILIC column with ACN:Water and :ammonium carbonate333.1 seconds40023050
KI_GIAR_zic_HILIC_pH2_7 = Merck SeQuant ZIC-HILIC with ACN:Water and 0.1% FA270.3 seconds40023050
Meister zic-pHILIC pH9.3 = Merck SeQuant ZIC-pHILIC column with ACN:Water 5mM NH4Ac pH9.3 and 5mM ammonium acetate in water7.8 seconds40023050

Predicted Kovats Retention Indices

Underivatized

MetaboliteSMILESKovats RI ValueColumn TypeReference
DimethindeneCC(C1=C(CCN(C)C)CC2=CC=CC=C12)C1=CC=CC=N13064.1Standard polar33892256
DimethindeneCC(C1=C(CCN(C)C)CC2=CC=CC=C12)C1=CC=CC=N12328.9Standard non polar33892256
DimethindeneCC(C1=C(CCN(C)C)CC2=CC=CC=C12)C1=CC=CC=N12247.1Semi standard non polar33892256
Spectra

GC-MS Spectra

Spectrum TypeDescriptionSplash KeyDeposition DateSourceView
Predicted GC-MSPredicted GC-MS Spectrum - Dimethindene GC-MS (Non-derivatized) - 70eV, Positivesplash10-0a6r-9580000000-d988cb2b7d041f1d29b42017-09-01Wishart LabView Spectrum
Predicted GC-MSPredicted GC-MS Spectrum - Dimethindene GC-MS (Non-derivatized) - 70eV, PositiveNot Available2021-10-12Wishart LabView Spectrum

MS/MS Spectra

Spectrum TypeDescriptionSplash KeyDeposition DateSourceView
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Dimethindene 10V, Positive-QTOFsplash10-0006-0090000000-6f0b397decf52bcf1a592016-08-03Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Dimethindene 20V, Positive-QTOFsplash10-006y-2390000000-b930ccee7688ed4a03242016-08-03Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Dimethindene 40V, Positive-QTOFsplash10-00bl-3940000000-b9bc4d1c64f0cee0fdf02016-08-03Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Dimethindene 10V, Negative-QTOFsplash10-0006-0090000000-9d54a7a45b59604fbf5e2016-08-03Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Dimethindene 20V, Negative-QTOFsplash10-0006-1090000000-b5c54114bd9f8ab5e29c2016-08-03Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Dimethindene 40V, Negative-QTOFsplash10-056u-9370000000-c008c6758091f141fe252016-08-03Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Dimethindene 10V, Positive-QTOFsplash10-0006-0190000000-411f16ef1c889ea21fe62021-10-11Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Dimethindene 20V, Positive-QTOFsplash10-0a4m-2690000000-797dffad8f6d138897612021-10-11Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Dimethindene 40V, Positive-QTOFsplash10-0a4i-7910000000-bf84eccff5bbaaa30cb02021-10-11Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Dimethindene 10V, Negative-QTOFsplash10-000x-0090000000-b23b853c492b4d851fdd2021-10-11Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Dimethindene 20V, Negative-QTOFsplash10-000x-0590000000-f07ef0659fb9298c7d4f2021-10-11Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Dimethindene 40V, Negative-QTOFsplash10-002o-1920000000-b4c8104237666425929f2021-10-11Wishart LabView Spectrum
Biological Properties
Cellular Locations
  • Membrane
Biospecimen Locations
  • Blood
  • Urine
Tissue LocationsNot Available
Pathways
Normal Concentrations
BiospecimenStatusValueAgeSexConditionReferenceDetails
BloodExpected but not QuantifiedNot QuantifiedNot AvailableNot AvailableTaking drug identified by DrugBank entry DB08801 details
UrineExpected but not QuantifiedNot QuantifiedNot AvailableNot AvailableTaking drug identified by DrugBank entry DB08801 details
Abnormal Concentrations
Not Available
Associated Disorders and Diseases
Disease ReferencesNone
Associated OMIM IDsNone
DrugBank IDDB08801
Phenol Explorer Compound IDNot Available
FooDB IDNot Available
KNApSAcK IDNot Available
Chemspider ID20541
KEGG Compound IDNot Available
BioCyc IDNot Available
BiGG IDNot Available
Wikipedia LinkDimetindene
METLIN IDNot Available
PubChem Compound21855
PDB IDNot Available
ChEBI ID126443
Food Biomarker OntologyNot Available
VMH IDNot Available
MarkerDB IDNot Available
Good Scents IDNot Available
References
Synthesis ReferenceNot Available
Material Safety Data Sheet (MSDS)Not Available
General References
  1. Lambrecht G, Gross J, Mutschler E: Neuronal soma-dendritic and prejunctional M1-M4 receptors in gastrointestinal and genitourinary smooth muscle. Life Sci. 1999;64(6-7):403-10. [PubMed:10069503 ]
  2. Novartis Pamphlet [Link]

Enzymes

General function:
Involved in G-protein coupled receptor protein signaling pathway
Specific function:
In peripheral tissues, the H1 subclass of histamine receptors mediates the contraction of smooth muscles, increase in capillary permeability due to contraction of terminal venules, and catecholamine release from adrenal medulla, as well as mediating neurotransmission in the central nervous system
Gene Name:
HRH1
Uniprot ID:
P35367
Molecular weight:
55783.6
References
  1. Moree WJ, Li BF, Zamani-Kord S, Yu J, Coon T, Huang C, Marinkovic D, Tucci FC, Malany S, Bradbury MJ, Hernandez LM, Wen J, Wang H, Hoare SR, Petroski RE, Jalali K, Yang C, Sacaan A, Madan A, Crowe PD, Beaton G: Identification of a novel selective H1-antihistamine with optimized pharmacokinetic properties for clinical evaluation in the treatment of insomnia. Bioorg Med Chem Lett. 2010 Oct 1;20(19):5874-8. doi: 10.1016/j.bmcl.2010.07.117. Epub 2010 Aug 3. [PubMed:20800486 ]
  2. Pfaff O, Hildebrandt C, Waelbroeck M, Hou X, Moser U, Mutschler E, Lambrecht G: The (S)-(+)-enantiomer of dimethindene: a novel M2-selective muscarinic receptor antagonist. Eur J Pharmacol. 1995 Nov 24;286(3):229-40. [PubMed:8608784 ]
General function:
Involved in G-protein coupled receptor protein signaling pathway
Specific function:
The muscarinic acetylcholine receptor mediates various cellular responses, including inhibition of adenylate cyclase, breakdown of phosphoinositides and modulation of potassium channels through the action of G proteins. Primary transducing effect is adenylate cyclase inhibition
Gene Name:
CHRM2
Uniprot ID:
P08172
Molecular weight:
51714.6
References
  1. Pfaff O, Hildebrandt C, Waelbroeck M, Hou X, Moser U, Mutschler E, Lambrecht G: The (S)-(+)-enantiomer of dimethindene: a novel M2-selective muscarinic receptor antagonist. Eur J Pharmacol. 1995 Nov 24;286(3):229-40. [PubMed:8608784 ]