EX-21 2 v433075_exh21.htm EXHIBIT 21

Exhibit 21

# SYNTHETIC BIOLOGICS, INC. SUBSIDIARIES

The following table lists all of the subsidiaries of Synthetic Biologics, Inc. and the jurisdiction of incorporation of each subsidiary. Each subsidiary does business under its corporate name indicated in the table.

Subsidiary Name |  | Ownership |  | Jurisdiction of Incorporation
Pipex Therapeutics, Inc. |  | Wholly owned |  | Delaware
Effective Pharmaceuticals, Inc. |  | Wholly owned |  | Delaware
Solovax, Inc. |  | Majority-owned |  | Delaware
CD4 Biosciences, Inc. |  | Majority-owned |  | Delaware
Epitope Pharmaceuticals, Inc. |  | Majority-owned |  | Delaware
Healthmine, Inc. |  | Wholly owned |  | Delaware
Putney Drug Corp. |  | Wholly owned |  | Delaware
Synthetic Biomics, Inc. |  | Majority-owned |  | Nevada