Identification
NameBenzquinamide
Accession NumberDB00767  (APRD00820)
TypeSmall Molecule
GroupsWithdrawn
Description

Benzquinamide is a discontinued antiemetic compound with antihistaminic, mild anticholinergic, and sedative properties. The mechanism of action is not known, but presumably benzquinamide works via antagonism of muscarinic acetycholine receptors and histamine H1 receptors.

Structure
Thumb
Synonyms
BZQ
External IDs Not Available
Product Ingredients
IngredientUNIICASInChI KeyDetails
Benzquinamide hydrochloride3221WFM86J 113-69-9KZLNXGBVFTWMPS-UHFFFAOYSA-NDetails
Approved Prescription ProductsNot Available
Approved Generic Prescription ProductsNot Available
Approved Over the Counter ProductsNot Available
Unapproved/Other Products Not Available
International Brands
NameCompany
BenzchinamideNot Available
Emete-conPfizer
EmeticonPfizer
PromeconEndo
QuantrilPfizer
Brand mixturesNot Available
CategoriesNot Available
UNII0475EA27Q3
CAS number63-12-7
WeightAverage: 404.4999
Monoisotopic: 404.231122144
Chemical FormulaC22H32N2O5
InChI KeyJSZILQVIPPROJI-UHFFFAOYSA-N
InChI
InChI=1S/C22H32N2O5/c1-6-23(7-2)22(26)17-13-24-9-8-15-10-20(27-4)21(28-5)11-16(15)18(24)12-19(17)29-14(3)25/h10-11,17-19H,6-9,12-13H2,1-5H3
IUPAC Name
3-(diethylcarbamoyl)-9,10-dimethoxy-1H,2H,3H,4H,6H,7H,11bH-pyrido[2,1-a]isoquinolin-2-yl acetate
SMILES
CCN(CC)C(=O)C1CN2CCC3=CC(OC)=C(OC)C=C3C2CC1OC(C)=O
Pharmacology
Indication

Used to prevent and treat nausea and vomiting associated with anesthesia and surgery, administered intramuscularly or intravenously.

Structured Indications Not Available
Pharmacodynamics

Benzquinamide is an antiemetic compound with antihistaminic, mild anticholinergic, and sedative properties.

Mechanism of action

The mechanism of action is not known, but presumably benzquinamide works via antagonism of muscarinic acetycholine receptors and histamine H1 receptors.

TargetKindPharmacological actionActionsOrganismUniProt ID
Histamine H1 receptorProteinyes
antagonist
HumanP35367 details
Muscarinic acetylcholine receptor M4Proteinyes
antagonist
HumanP08173 details
Muscarinic acetylcholine receptor M1Proteinyes
antagonist
HumanP11229 details
Muscarinic acetylcholine receptor M5Proteinyes
antagonist
HumanP08912 details
Muscarinic acetylcholine receptor M2Proteinyes
antagonist
HumanP08172 details
Muscarinic acetylcholine receptor M3Proteinyes
antagonist
HumanP20309 details
Related Articles
Absorption

Incomplete, with 33–39% bioavailability via the capsule and suppository routes, relative to the intramuscular route.

Volume of distributionNot Available
Protein bindingNot Available
MetabolismNot Available
Route of eliminationNot Available
Half life

1-1.6 hours (for all formulations)

ClearanceNot Available
ToxicityNot Available
Affected organisms
  • Humans and other mammals
PathwaysNot Available
Pharmacogenomic Effects/ADRs Not Available
Interactions
Drug Interactions Not Available
Food InteractionsNot Available
References
Synthesis Reference

Tretter, J.R.; US. Patent 3,053,845; September 11, 1962; assigned to Chas. Pfizer & Co., Inc. Lombardino, J.G. and McLamore, W.M.; U.S. Patent 3,055,894; September 25,1962; assigned to Chas. Pfizer & Co., Inc.

General ReferencesNot Available
External Links
ATC CodesNot Available
AHFS CodesNot Available
PDB EntriesNot Available
FDA labelNot Available
MSDSNot Available
Clinical Trials
Clinical Trials Not Available
Pharmacoeconomics
Manufacturers
PackagersNot Available
Dosage formsNot Available
PricesNot Available
PatentsNot Available
Properties
StateSolid
Experimental Properties
PropertyValueSource
melting point (°C)130-131.5Tretter, J.R.; US. Patent 3,053,845; September 11, 1962;assigned to Chas. Pfizer & Co., Inc. Lombardino, J.G. and McLamore, W.M.; U.S. Patent 3,055,894; September 25,1962; assigned to Chas. Pfizer & Co., Inc.
water solubility153 mg/LNot Available
logP1.7Not Available
Predicted Properties
PropertyValueSource
Water Solubility0.49 mg/mLALOGPS
logP2.49ALOGPS
logP1.42ChemAxon
logS-2.9ALOGPS
pKa (Strongest Acidic)19.61ChemAxon
pKa (Strongest Basic)7.5ChemAxon
Physiological Charge1ChemAxon
Hydrogen Acceptor Count5ChemAxon
Hydrogen Donor Count0ChemAxon
Polar Surface Area68.31 Å2ChemAxon
Rotatable Bond Count7ChemAxon
Refractivity110.47 m3·mol-1ChemAxon
Polarizability45.27 Å3ChemAxon
Number of Rings3ChemAxon
Bioavailability1ChemAxon
Rule of FiveYesChemAxon
Ghose FilterYesChemAxon
Veber's RuleNoChemAxon
MDDR-like RuleYesChemAxon
Predicted ADMET features
PropertyValueProbability
Human Intestinal Absorption+0.8998
Blood Brain Barrier+0.9383
Caco-2 permeable+0.6206
P-glycoprotein substrateSubstrate0.7763
P-glycoprotein inhibitor IInhibitor0.7325
P-glycoprotein inhibitor IINon-inhibitor0.5791
Renal organic cation transporterNon-inhibitor0.5858
CYP450 2C9 substrateNon-substrate0.8588
CYP450 2D6 substrateNon-substrate0.7872
CYP450 3A4 substrateSubstrate0.7516
CYP450 1A2 substrateNon-inhibitor0.8882
CYP450 2C9 inhibitorNon-inhibitor0.9501
CYP450 2D6 inhibitorNon-inhibitor0.9311
CYP450 2C19 inhibitorNon-inhibitor0.7941
CYP450 3A4 inhibitorNon-inhibitor0.8742
CYP450 inhibitory promiscuityLow CYP Inhibitory Promiscuity0.7716
Ames testNon AMES toxic0.7011
CarcinogenicityNon-carcinogens0.8844
BiodegradationNot ready biodegradable0.9795
Rat acute toxicity2.5546 LD50, mol/kg Not applicable
hERG inhibition (predictor I)Weak inhibitor0.9392
hERG inhibition (predictor II)Inhibitor0.5894
ADMET data is predicted using admetSAR, a free tool for evaluating chemical ADMET properties. (23092397 )
Spectra
Mass Spec (NIST)Not Available
Spectra
Spectrum TypeDescriptionSplash Key
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 10V, PositiveNot Available
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 20V, PositiveNot Available
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 40V, PositiveNot Available
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 10V, NegativeNot Available
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 20V, NegativeNot Available
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 40V, NegativeNot Available
Taxonomy
DescriptionThis compound belongs to the class of organic compounds known as tetrahydroisoquinolines. These are tetrahydrogenated isoquinoline derivatives.
KingdomOrganic compounds
Super ClassOrganoheterocyclic compounds
ClassTetrahydroisoquinolines
Sub ClassNot Available
Direct ParentTetrahydroisoquinolines
Alternative ParentsPiperidinecarboxamides / Anisoles / Aralkylamines / Alkyl aryl ethers / Tertiary carboxylic acid amides / Trialkylamines / Carboxylic acid esters / Amino acids and derivatives / Monocarboxylic acids and derivatives / Azacyclic compounds
SubstituentsTetrahydroisoquinoline / 3-piperidinecarboxamide / Piperidinecarboxamide / Anisole / Alkyl aryl ether / Aralkylamine / Benzenoid / Piperidine / Tertiary carboxylic acid amide / Tertiary aliphatic amine
Molecular FrameworkAromatic heteropolycyclic compounds
External Descriptorsmonocarboxylic acid amide (CHEBI:27662 )

Targets

Kind
Protein
Organism
Human
Pharmacological action
yes
Actions
antagonist
General Function:
Histamine receptor activity
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
Uniprot Name:
Histamine H1 receptor
Molecular Weight:
55783.61 Da
References
  1. Overington JP, Al-Lazikani B, Hopkins AL: How many drug targets are there? Nat Rev Drug Discov. 2006 Dec;5(12):993-6. [PubMed:17139284 ]
  2. Imming P, Sinning C, Meyer A: Drugs, their targets and the nature and number of drug targets. Nat Rev Drug Discov. 2006 Oct;5(10):821-34. [PubMed:17016423 ]
  3. Maurer H, Pfleger K: Identification and differentiation of alkylamine antihistamines and their metabolites in urine by computerized gas chromatography-mass spectrometry. J Chromatogr. 1988 Aug 19;430(1):31-41. [PubMed:2905706 ]
  4. Niemegeers CJ: Antiemetic specificity of dopamine antagonists. Psychopharmacology (Berl). 1982;78(3):210-3. [PubMed:6130555 ]
Kind
Protein
Organism
Human
Pharmacological action
yes
Actions
antagonist
General Function:
Guanyl-nucleotide exchange factor activity
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 inhibition of adenylate cyclase.
Gene Name:
CHRM4
Uniprot ID:
P08173
Uniprot Name:
Muscarinic acetylcholine receptor M4
Molecular Weight:
53048.65 Da
References
  1. Overington JP, Al-Lazikani B, Hopkins AL: How many drug targets are there? Nat Rev Drug Discov. 2006 Dec;5(12):993-6. [PubMed:17139284 ]
  2. Imming P, Sinning C, Meyer A: Drugs, their targets and the nature and number of drug targets. Nat Rev Drug Discov. 2006 Oct;5(10):821-34. [PubMed:17016423 ]
Kind
Protein
Organism
Human
Pharmacological action
yes
Actions
antagonist
General Function:
Phosphatidylinositol phospholipase c activity
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 Pi turnover.
Gene Name:
CHRM1
Uniprot ID:
P11229
Uniprot Name:
Muscarinic acetylcholine receptor M1
Molecular Weight:
51420.375 Da
References
  1. Overington JP, Al-Lazikani B, Hopkins AL: How many drug targets are there? Nat Rev Drug Discov. 2006 Dec;5(12):993-6. [PubMed:17139284 ]
  2. Imming P, Sinning C, Meyer A: Drugs, their targets and the nature and number of drug targets. Nat Rev Drug Discov. 2006 Oct;5(10):821-34. [PubMed:17016423 ]
Kind
Protein
Organism
Human
Pharmacological action
yes
Actions
antagonist
General Function:
Phosphatidylinositol phospholipase c activity
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 Pi turnover.
Gene Name:
CHRM5
Uniprot ID:
P08912
Uniprot Name:
Muscarinic acetylcholine receptor M5
Molecular Weight:
60073.205 Da
References
  1. Overington JP, Al-Lazikani B, Hopkins AL: How many drug targets are there? Nat Rev Drug Discov. 2006 Dec;5(12):993-6. [PubMed:17139284 ]
  2. Imming P, Sinning C, Meyer A: Drugs, their targets and the nature and number of drug targets. Nat Rev Drug Discov. 2006 Oct;5(10):821-34. [PubMed:17016423 ]
Kind
Protein
Organism
Human
Pharmacological action
yes
Actions
antagonist
General Function:
G-protein coupled acetylcholine receptor activity
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. Signaling promotes phospholipase C activity, leading to the release of inositol trisphosphate (IP3); this then trigge...
Gene Name:
CHRM2
Uniprot ID:
P08172
Uniprot Name:
Muscarinic acetylcholine receptor M2
Molecular Weight:
51714.605 Da
References
  1. Overington JP, Al-Lazikani B, Hopkins AL: How many drug targets are there? Nat Rev Drug Discov. 2006 Dec;5(12):993-6. [PubMed:17139284 ]
  2. Imming P, Sinning C, Meyer A: Drugs, their targets and the nature and number of drug targets. Nat Rev Drug Discov. 2006 Oct;5(10):821-34. [PubMed:17016423 ]
Kind
Protein
Organism
Human
Pharmacological action
yes
Actions
antagonist
General Function:
Receptor activity
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 Pi turnover.
Gene Name:
CHRM3
Uniprot ID:
P20309
Uniprot Name:
Muscarinic acetylcholine receptor M3
Molecular Weight:
66127.445 Da
References
  1. Overington JP, Al-Lazikani B, Hopkins AL: How many drug targets are there? Nat Rev Drug Discov. 2006 Dec;5(12):993-6. [PubMed:17139284 ]
  2. Imming P, Sinning C, Meyer A: Drugs, their targets and the nature and number of drug targets. Nat Rev Drug Discov. 2006 Oct;5(10):821-34. [PubMed:17016423 ]
Drug created on June 13, 2005 07:24 / Updated on July 18, 2017 16:52