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Details

Stereochemistry ACHIRAL
Molecular Formula C18H14F3N3O6S
Molecular Weight 457.38
Optical Activity NONE
Defined Stereocenters 0 / 0
E/Z Centers 0
Charge 0

SHOW SMILES / InChI
Structure of PONAZURIL

SMILES

CN1C(=O)NC(=O)N(C1=O)C2=CC=C(OC3=CC=C(C=C3)S(=O)(=O)C(F)(F)F)C(C)=C2

InChI

InChIKey=VBUNOIXRZNJNAD-UHFFFAOYSA-N
InChI=1S/C18H14F3N3O6S/c1-10-9-11(24-16(26)22-15(25)23(2)17(24)27)3-8-14(10)30-12-4-6-13(7-5-12)31(28,29)18(19,20)21/h3-9H,1-2H3,(H,22,25,26)

HIDE SMILES / InChI

Description

Ponazuril, sold by the Bayer Corporation under the trade name Marquis, was the first FDA-approved treatment for equine protozoal myeloencephalitis (EPM) in horse, caused by Sarcocystis neurona. Also this drug was used in animals such as cats, dogs against coccidia, an intestinal parasite. Coccidia treatment is far shorter than treatment for EPM.

Approval Year

Conditions

ConditionModalityTargetsHighest PhaseProduct
Curative
MARQUIS
Curative
Unknown

PubMed

Sample Use Guides

In Vivo Use Guide
horses: paste to treat one 1,200 lb (544 kg) horse for seven days, at a dose rate of 5 mg/kg (2.27 mg/lb) body weight
Route of Administration: Oral
In Vitro Use Guide
Ponazuril inhibited T. equi in erythrocyte culture at all concentrations tested but parasite elimination required at least 500 μg/mL. The high dose of ponazuril required for in vitro inhibition likely limits its ability to control or clear T. equi infection in vivo.