Exhibit A JOINT FILING AGREEMENTJoint Filing Agreement • February 13th, 2009 • MHR Capital Partners Master Account LP • Medicinal chemicals & botanical products
The undersigned hereby agree that this Statement on Schedule 13G with respect to the shares of Common Stock of Neose Technologies, Inc., dated as of February 13, 2009, is, and any amendments thereto (including amendments on Schedule 13G) signed by each of the undersigned shall be, filed on behalf of each of us pursuant to and in accordance with the provisions of Rule 13d-1(k) under the Act.
