Aceto Schedules Third Quarter Financial Results News Release and Conference Call

LAKE SUCCESS, N.Y.--April 25, 2006--Aceto Corporation , a global distributor of chemically-derived pharmaceuticals, biopharmaceuticals, specialty chemicals and agrochemicals, today announced that it will issue its financial results for the third quarter ended March 31, 2006 before the stock market opens on Friday, May 5, 2006. That morning, at 10:00 am ET, Leonard S. Schwartz, Chairman, CEO, and President, and Douglas Roth, CFO, will conduct a conference call.

Interested parties may participate in the call by dialing 888-787-0577 (706-679-3204 for international callers) - please call in 10 minutes before the call is scheduled to begin, and ask for the Aceto call (conference ID # 8368842). The conference call will also be broadcast live over the Internet via the Investor Relations section of www.aceto.com. 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 conference call will be archived on the Company's website, and a recorded phone replay will also be available from 12:00 noon ET on Friday, May 5, 2006 until 5:00 p.m. ET on Monday, May 8, 2006. Dial 800-642-1687 (706-645-9291 for international callers) and enter the code 8368842 for the phone replay.

ABOUT ACETO

Aceto Corporation, which was incorporated in 1947, is a global leader in the distribution and marketing of biopharmaceuticals, chemically-derived pharmaceuticals, specialty chemicals and agrochemicals used principally as raw materials in the agricultural, color, pharmaceutical, surface coating/ink and general chemical consuming industries. With offices in ten countries, Aceto Corporation distributes over 1,000 chemicals in these and other fields.