Aceto Corporation Announces the Closing of the Rising Pharmaceuticals, Inc., Transaction

Aceto Corporation (Nasdaq:ACET), a global leader in the sourcing, quality assurance, regulatory support, marketing and distribution of pharmaceuticals, nutraceuticals, specialty chemicals and crop protection products, today announced that it has closed the previously announced transaction for its wholly-owned subsidiary to acquire certain assets of Rising Pharmaceuticals, Inc ("Rising").

The Company will hold a conference call and webcast to discuss the transaction on January 6, 2011. That morning, at 9:00 AM ET, Albert Eilender, Ronald Gold, and Douglas Roth will conduct a conference call. Interested parties may participate in the call by dialing 800-447-0521 begin_of_the_skype_highlighting 800-447-0521 end_of_the_skype_highlighting (847-413-3238 begin_of_the_skype_highlighting 847-413-3238 end_of_the_skype_highlighting for international callers) – please call in 10 minutes before the call is scheduled to begin, and ask for the Aceto call (conference ID # 28692288). The conference call will also be webcast live via the Investor Relations section of our website, To listen to the live call please go to the website at least 15 minutes early to register, download and install any necessary audio software. The slide presentation that will be discussed on the conference call and webcast will be made available on the Company's website no later than the evening of January 5, 2011. To access the slides, go to the Company's homepage and click on the link for the January 6, 2011 Rising Transaction Presentation.