New Pharmaceutical Grade Product Provides Formulation Flexibility for Oral Pharmaceutical Applications

Kingsport, TN., (July 11, 2008) Eastman Chemical Company is pleased to announce the availability of Eastman™ Cellulose Acetate (CA-320S NF/EP), a pharmaceutical excipient for oral dosage drug formulations that enables improved delivery of active pharmaceutical ingredients.

Eastman™ CA-320S is an excipient that is particularly useful in controlled-release applications involving membrane release or matrix release. When used for controlled release applications, CA-320S aids in drug delivery by releasing the drug in the body at a controlled rate and over a predictable period of time.

CA-320S is the newest member of the Eastman family of cellulose esters for pharmaceutical applications including CA-398-10NF/EP, CAB 171-15 NF, and CA -320S NF/EP. Each has different physical properties and with the addition of CA-320S, formulators can have greater flexibility in designing drug delivery systems for targeted and controlled, sustained, or extended release.

CA-320S NF/EP is made under current good manufacturing conditions (cGMP) for oral dose pharmaceutical applications and meets the requirements of the National Formulary (NF) and European Pharmacopeia (EP).

For more information about Eastman and its products, visit www.eastman.com or contact Lucy Stewart, global trade media relations, at +1-423-229-4229 or globalmediarelations@eastman.com.