( CORAL GABLES Fla. May 09 2007 /PRNe...)Catalyst Pharmaceutical Partners, Inc. Announces Top-Line Results,of Its Bioequivalence Study of CPP-109 (Vigabatrin), the Company's,Investigational Drug to Treat Cocaine and Methamphetamine Addiction,Health

CORAL GABLES, Fla., May 09, 2007 /PRNewswire-FirstCall/ -- Catalyst Pharmaceutical Partners, Inc. announced today positive initial, top-line results from a bioequivalence study demonstrating that CPP-109 (Catalyst's Vigabatrin Tablets) is bioavailable and bioequivalent to Sabril Tablets, the version of vigabatrin marketed in Europe by Sanofi Aventis. These data potentially provide a basis for linking CPP-109 to the extensive body of published pre-clinical and clinical literature on Sabril.

Vigabatrin has been marketed over the past decade in more than 30 countries under the brand name Sabril(R) as a secondary treatment for adult epilepsy and as a primary treatment for the management of infantile spasms, known as West Syndrome.

Commenting on today's news and the Company's product development program, Patrick J. McEnany, Catalyst's Chairman and Chief Executive Officer, stated, "We are encouraged by the initial, top-line results of our bioequivalence study and look forward to moving ahead with our U.S. Phase II clinical trials evaluating the use of CPP-109 for the treatment of cocaine addiction and methamphetamine addiction. The CPP-109 tablets required for our upcoming clinical trials have been formulated and manufactured and are now available for our use. We expect to commence our U.S. Phase II clinical trial with respect to cocaine addiction in the second quarter of 2007 and our U.S. Phase II clinical trial with respect to methamphetamine addiction in the third quarter of 2007."

About The Bioequivalence Study

In the bioequivalence study, investigators randomized 30 healthy male and female subjects to either of two treatments -- a 500 mg. tablet of Sabril(R) or 500 mg. tablet of CPP-109. The researchers dispensed the assigned medication tablet to the participants after an overnight fast and collected blood plasma samples before dosing. An additional 21 blood plasma samples were collec
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