U.S. Department of Health & Human Services Divider Arrow National Institutes of Health Divider Arrow NCATS

Details

Stereochemistry ACHIRAL
Molecular Formula C19H23NO.BrH
Molecular Weight 362.304
Optical Activity NONE
Defined Stereocenters 0 / 0
E/Z Centers 0
Charge 0

SHOW SMILES / InChI
Structure of DIPHENYLPYRALINE HYDROBROMIDE

SMILES

Br.CN1CCC(CC1)OC(C2=CC=CC=C2)C3=CC=CC=C3

InChI

InChIKey=IQVABVYNAOOBIJ-UHFFFAOYSA-N
InChI=1S/C19H23NO.BrH/c1-20-14-12-18(13-15-20)21-19(16-8-4-2-5-9-16)17-10-6-3-7-11-17;/h2-11,18-19H,12-15H2,1H3;1H

HIDE SMILES / InChI

Molecular Formula BrH
Molecular Weight 80.912
Charge 0
Count
Stereochemistry ACHIRAL
Additional Stereochemistry No
Defined Stereocenters 0 / 0
E/Z Centers 0
Optical Activity NONE

Molecular Formula C19H23NO
Molecular Weight 281.392
Charge 0
Count
Stereochemistry ACHIRAL
Additional Stereochemistry No
Defined Stereocenters 0 / 0
E/Z Centers 0
Optical Activity NONE

Description
Curator's Comment: description was created based on several sources, including https://www.drugbank.ca/drugs/DB01146 | https://www.ncbi.nlm.nih.gov/pubmed/42012 | https://www.ncbi.nlm.nih.gov/pubmed/1912125

Diphenylpyraline is an antihistamine that prevents but does not reverse, responses mediated by histamine alone. Diphenylpyraline antagonizes most of the pharmacological effects of histamine, including urticaria and pruritus. Also, diphenylpyraline may exhibit anticholinergic actions (as do most of the antihistamines) and may thus provide a drying effect on the nasal mucosa. Antihistamines such as diphenylpyraline used in the treatment of allergy act by competing with histamine for H1-receptor sites on effector cells. This reduces the effects of histamine, leading to a temporary reduction of allergy symptoms.

Originator

Sources: Science (Washington) 1950 Vol.3 No.2895 pp.689-691 pp.

Approval Year

Targets

Targets

Primary TargetPharmacologyConditionPotency
4.1 nM [Ki]
Conditions
T1/2

T1/2

ValueDoseCo-administeredAnalytePopulation
32 h
5 mg single, oral
dose: 5 mg
route of administration: Oral
experiment type: SINGLE
co-administered:
DIPHENYLPYRALINE urine
Homo sapiens
population: HEALTHY
age: ADULT
sex: MALE
food status: FED
PubMed

PubMed

TitleDatePubMed
Development of a list of potentially inappropriate drugs for the korean elderly using the delphi method.
2010-12
Adverse drug effects in hospitalized elderly: data from the healthcare cost and utilization project.
2010
Development and validation of LC-MS/MS method for the determination of cyproheptadine in several pharmaceutical syrup formulations.
2009-12-05
Application of dummy molecularly imprinted solid-phase extraction in the analysis of cyproheptadine in bovine urine.
2009-05
Development and validation of an LC-MS/MS confirmatory method for residue analysis of cyproheptadine in urine of food-producing animals.
2009-03-25
Antimycobacterial and H1-antihistaminic activity of 2-substituted piperidine derivatives.
2008-12-15
Antimycobacterial activity of diphenylpyraline derivatives.
2008-04
Transition metal complexes of quinolino[3,2-b]benzodiazepine and quinolino[3,2-b]benzoxazepine: synthesis, characterization, and antimicrobial studies.
2007
Simultaneous determination of ten antihistamine drugs in human plasma using pipette tip solid-phase extraction and gas chromatography/mass spectrometry.
2006
Diphenylpyraline, a histamine H1 receptor antagonist, has psychostimulant properties.
2005-01-04
Treatment of urethral sphincter mechanism incompetence in 11 bitches with a sustained-release formulation of phenylpropanolamine hydrochloride.
2002-09-28
Sensitive determination of pethidine in body fluids by surface ionization organic mass spectrometry.
2001-07-05
Diphenylpyraline-responsive parkinsonism in cerebrotendinous xanthomatosis: long-term follow up of three patients.
2001-01-01
Decreased histamine H1 receptors in the frontal cortex of brains from patients with chronic schizophrenia.
1991-08-15
[Antimycobacterial antihistaminics].
1989-08
Diphenylpyraline (Lergobine) in the treatment of patients suffering from allergic and vasomotor rhinitis.
1977
Patents

Patents

Sample Use Guides

Up to 6 mg daily in 3-4 divided doses.
Route of Administration: Oral
In Vitro Use Guide
Brain tissue was obtained at autopsy on 18 Japanese patients with chronic schizophrenia. The brain tissues were weighed, homogenized and centrifuged. The specific 3H-mepyramine binding to the brain tissues reached equilibrium values within 20 min after incubation at 25°C. Inhibition of the specific component of the 3H-mepyramine binding by Diphenylpyraline was then studied. The H1 antagonist diphenylpyraline (Ki=4.1nM) was potent competitors for the specific binding of 3H-mepyramine.
Substance Class Chemical
Created
by admin
on Mon Mar 31 21:35:39 GMT 2025
Edited
by admin
on Mon Mar 31 21:35:39 GMT 2025
Record UNII
1QG9Y7X51O
Record Status Validated (UNII)
Record Version
  • Download
Name Type Language
DIPHENYLPYRALINE HYDROBROMIDE
MI  
Common Name English
DIPHENYLPYRALINE HYDROBROMIDE [MI]
Preferred Name English
PIPERIDINE, 4-(DIPHENYLMETHOXY)-1-METHYL-, HYDROBROMIDE (1:1)
Systematic Name English
Code System Code Type Description
CAS
5807-87-4
Created by admin on Mon Mar 31 21:35:39 GMT 2025 , Edited by admin on Mon Mar 31 21:35:39 GMT 2025
PRIMARY
MERCK INDEX
m4640
Created by admin on Mon Mar 31 21:35:39 GMT 2025 , Edited by admin on Mon Mar 31 21:35:39 GMT 2025
PRIMARY Merck Index
EPA CompTox
DTXSID50206797
Created by admin on Mon Mar 31 21:35:39 GMT 2025 , Edited by admin on Mon Mar 31 21:35:39 GMT 2025
PRIMARY
FDA UNII
1QG9Y7X51O
Created by admin on Mon Mar 31 21:35:39 GMT 2025 , Edited by admin on Mon Mar 31 21:35:39 GMT 2025
PRIMARY
PUBCHEM
71586817
Created by admin on Mon Mar 31 21:35:39 GMT 2025 , Edited by admin on Mon Mar 31 21:35:39 GMT 2025
PRIMARY