U.S. Department of Health & Human Services Divider Arrow National Institutes of Health Divider Arrow NCATS
This repository is under review for potential modification in compliance with Administration directives.

Details

Stereochemistry ABSOLUTE
Molecular Formula C19H33N5O2.H2O
Molecular Weight 381.5129
Optical Activity UNSPECIFIED
Defined Stereocenters 4 / 4
E/Z Centers 0
Charge 0

SHOW SMILES / InChI
Structure of TEZAMPANEL 2-ETHYLBUTYRATE MONOHYDRATE

SMILES

O.CCC(CC)COC(=O)[C@@H]1C[C@H]2C[C@@H](CCC3=NN=NN3)CC[C@H]2CN1

InChI

InChIKey=QARZUMPLLDXXBR-QKXZLCLGSA-N
InChI=1S/C19H33N5O2.H2O/c1-3-13(4-2)12-26-19(25)17-10-16-9-14(5-7-15(16)11-20-17)6-8-18-21-23-24-22-18;/h13-17,20H,3-12H2,1-2H3,(H,21,22,23,24);1H2/t14-,15+,16-,17+;/m1./s1

HIDE SMILES / InChI

Description

Tezampanel, also known as LY 293558 and NGX-424, is a drug originally developed by Eli Lilly, which is a competitive antagonist of the AMPA and kainate subtypes of the ionotropic glutamate receptor family. Tezampanel was in phase II clinical trial for treatment migraine, but this study was discontinued. Also this drug has several others potential pharmacological actions, one of them is anxiety disorders

CNS Activity

Originator

Approval Year

Targets

Primary TargetPharmacologyConditionPotency

Conditions

ConditionModalityTargetsHighest PhaseProduct
Primary
Unknown
Primary
Unknown

Cmax

ValueDoseCo-administeredAnalytePopulation
18433 ng/mL
15 mg/kg single, intramuscular
TEZAMPANEL plasma
Rattus norvegicus

AUC

ValueDoseCo-administeredAnalytePopulation
9396 ng × h/mL
15 mg/kg single, intramuscular
TEZAMPANEL plasma
Rattus norvegicus

T1/2

ValueDoseCo-administeredAnalytePopulation
1.5 h
15 mg/kg single, intramuscular
TEZAMPANEL plasma
Rattus norvegicus

PubMed

Sample Use Guides

In Vivo Use Guide
Single Administration of: TEZAMPANEL 40 mg; TEZAMPANEL 70 mg; TEZAMPANEL 100 mg
Route of Administration: Other
In Vitro Use Guide
LY293558 (Tezampanel) had a rank order of potency of GLU(K5) > or = GLU(K5/6) approximately GLU(A2i) approximately GLU(K2/5) approximately GLU(A1i) approximately GLU(A2o) approximately GLU(A3i) approximately GLU(A1o) > or = GLU(A3o) > or = GLU(A4i) approximately GLU(A4o) and >100 microM affinity for rat cortical GABA(A) receptors. Comparison of the blockade of AMPA- vs N-methyl-D-aspartate (NMDA)-induced inward currents demonstrated that LY293558 was five-fold more potent as an antagonist at AMPA vs NMDA receptors in vitro.