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Details

Stereochemistry ACHIRAL
Molecular Formula C9H7N5O3.H2O
Molecular Weight 251.1989
Optical Activity NONE
Defined Stereocenters 0 / 0
E/Z Centers 0
Charge 0

SHOW SMILES / InChI
Structure of ACITAZANOLAST MONOHYDRATE

SMILES

O.OC(=O)C(=O)NC1=CC=CC(=C1)C2=NN=NN2

InChI

InChIKey=LEZMUVNSMYOTNL-UHFFFAOYSA-N
InChI=1S/C9H7N5O3.H2O/c15-8(9(16)17)10-6-3-1-2-5(4-6)7-11-13-14-12-7;/h1-4H,(H,10,15)(H,16,17)(H,11,12,13,14);1H2

HIDE SMILES / InChI

Description
Curator's Comment: description was created based on several sources, including https://www.ncbi.nlm.nih.gov/pubmed/9150859

Tazanolast, an anti-allergic and anti-asthmatic agent with selective mast-cell stabilising effects, was developed jointly by Wakamoto and Torii Pharmaceuticals.

Approval Year

Targets

Targets

Primary TargetPharmacologyConditionPotency
Conditions

Conditions

ConditionModalityTargetsHighest PhaseProduct
Palliative
Unknown

Approved Use

Unknown
Cmax

Cmax

ValueDoseCo-administeredAnalytePopulation
1.18 μg/mL
75 mg single, oral
dose: 75 mg
route of administration: Oral
experiment type: SINGLE
co-administered:
ACITAZANOLAST plasma
Homo sapiens
population: HEALTHY
age: ADULT
sex: MALE
food status: UNKNOWN
AUC

AUC

ValueDoseCo-administeredAnalytePopulation
2.18 μg × h/mL
75 mg single, oral
dose: 75 mg
route of administration: Oral
experiment type: SINGLE
co-administered:
ACITAZANOLAST plasma
Homo sapiens
population: HEALTHY
age: ADULT
sex: MALE
food status: UNKNOWN
T1/2

T1/2

ValueDoseCo-administeredAnalytePopulation
2.48 h
75 mg single, oral
dose: 75 mg
route of administration: Oral
experiment type: SINGLE
co-administered:
ACITAZANOLAST plasma
Homo sapiens
population: HEALTHY
age: ADULT
sex: MALE
food status: UNKNOWN
Funbound

Funbound

ValueDoseCo-administeredAnalytePopulation
4%
ACITAZANOLAST plasma
Homo sapiens
PubMed

PubMed

TitleDatePubMed
Effect of an active metabolite of the antiallergic agent tazanolast on histamine release from rat mast cells.
1997-04
[Effect of tazanolast on platelet activating factor-induced airway hyperresponsiveness in guinea pigs].
1992-09
Patents

Sample Use Guides

0.01 and 0.033% aerosol inhalation.
Route of Administration: Respiratory
In Vitro Use Guide
WP-871 (Acitazanolast) may inhibit histamine release mainly by preventing the increase in intracellular Ca2+ concentration
Name Type Language
ACITAZANOLAST MONOHYDRATE
Common Name English
ZEPELIN
Preferred Name English
ACITAZANOLAST HYDRATE
Common Name English
ACETIC ACID, 2-OXO-2-((3-(2H-TETRAZOL-5-YL)PHENYL)AMINO)-, HYDRATE (1:1)
Common Name English
Acitazanolast monohydrate [WHO-DD]
Common Name English
Code System Code Type Description
PUBCHEM
11954321
Created by admin on Mon Mar 31 19:52:46 GMT 2025 , Edited by admin on Mon Mar 31 19:52:46 GMT 2025
PRIMARY
EPA CompTox
DTXSID80152132
Created by admin on Mon Mar 31 19:52:46 GMT 2025 , Edited by admin on Mon Mar 31 19:52:46 GMT 2025
PRIMARY
SMS_ID
100000127458
Created by admin on Mon Mar 31 19:52:46 GMT 2025 , Edited by admin on Mon Mar 31 19:52:46 GMT 2025
PRIMARY
FDA UNII
U6SU9ZSU4K
Created by admin on Mon Mar 31 19:52:46 GMT 2025 , Edited by admin on Mon Mar 31 19:52:46 GMT 2025
PRIMARY
CAS
1184521-48-9
Created by admin on Mon Mar 31 19:52:46 GMT 2025 , Edited by admin on Mon Mar 31 19:52:46 GMT 2025
PRIMARY
EVMPD
SUB33524
Created by admin on Mon Mar 31 19:52:46 GMT 2025 , Edited by admin on Mon Mar 31 19:52:46 GMT 2025
PRIMARY