CNST Constellation Pharmaceuticals Inc

Constar International Inc. (NASDAQ: CNST) has entered into an Oxbar(R) patent license agreement with Pago International of Austria under which Pago will be able to market its juice and nectar products packaged in PET bottles with enhanced oxygen-scavenger protection, for excellent retention of product quality in retail distribution throughout Europe. Philadelphia-based Constar International Inc. is a leading global producer of PET (polyethylene terephthalate) plastic containers for food, soft drinks and water. The company provides full service packaging solutions, from product design and engineering to ongoing customer support. Its customers include many of the world's largest consumer product companies. Pago International GmbH is an internationally operating premium fruit juice company. They are market leader in five European countries with a commitment to the highest standards for fruit juices as well as for their internal processes, customer relations and employee's careers. For additional information contact Alan Silverman, Vice President, Marketing and Business Development, Constar International Inc., (215) 552-3700 Cautionary Note Regarding Forward-Looking Statements Except for historical information, all information in this press release consists of forward-looking statements within the meaning of the federal securities laws. These forward-looking statements involve a number of risks, uncertainties and other factors, which may cause the actual results to be materially different from those expressed or implied in the forward-looking statements. Important factors that could cause the statements made in this press release or the actual results to differ are discussed under the caption "Risk Factors" in Constar's Form 10-K Annual Report for the year ended December 31, 2005 and in subsequent filings with the Securities and Exchange Commission made prior to, on or after the date hereof. Constar does not intend to review or revise any particular forward-looking statement in light of future events.