Exhibit 10.22 REDACTED CONFIDENTIAL TREATMENT REQUESTED ASSET PURCHASE AGREEMENT This ASSET PURCHASE AGREEMENT is made and entered into as of January 15, 1997 (the "Agreement") by and between Immunex Corporation, a Washington corporation ("Immunex"),...Asset Purchase Agreement • March 31st, 1997 • Supergen Inc • Pharmaceutical preparations • California
December 11, 1996 (Date for Reference Purposes)Standard Offer and Agreement for Purchase of Real Estate • March 31st, 1997 • Supergen Inc • Pharmaceutical preparations
