EXHIBIT 10.54 NEXSTAR PHARMACEUTICALS, INC. 2860 WILDERNESS PLACE BOULDER, COLORADO 80301 August 18, 1998 Mr. Patrick J. Mahaffy NeXstar Pharmaceuticals, Inc. 2860 Wilderness Way Boulder, Colorado 80301 Re: SEPARATION AGREEMENT Dear Patrick: This...Separation Agreement • March 19th, 1999 • Nexstar Pharmaceuticals Inc • Pharmaceutical preparations • Colorado
