Questcor Pharmaceuticals Inc., of Union City, Calif., appointed Craig Chambliss vice president of sales and marketing.

RegeneRx Biopharmaceuticals Inc., of Bethesda, Md., appointed Neil Lyons chief financial officer.

Renovis Inc., of South San Francisco, appointed Bruce Carter to its board.

Rinat Neuroscience Corp., of Palo Alto, Calif., appointed Carol Stratford vice president, intellectual property, and Paul Resnick senior director of business development. It also promoted Robert King to vice president, product development and manufacturing, and Fletcher Payne to vice president, finance.

Schering-Plough Corp., of Kenilworth, N.J., appointed Theo Nieuwenhuis vice president, Remicade marketing.

SG Cowen & Co. in New York hired John Chambers as a managing director of the Health Care Investment Banking Group, where he will focus on biotechnology and specialty pharma.

Stressgen Biotechnologies, of San Diego, appointed Gregory McKee president, CEO and director.

Synta Pharmaceuticals Corp., of Lexington, Mass., appointed Robert Terifay senior vice president, commercial development and strategy, and Stephen Gansler vice president, human resources.

Tanox Inc., of Houston, appointed Zhengbin Yao vice president of research.

Tercica Inc., of South San Francisco, appointed Chris Rivera senior vice president, commercial operations, and Thomas Wiggans to its board.

Tripos Inc., of St. Louis, promoted Bryan Koontz to senior vice president and general manager of discovery informatics.

Valera Pharmaceuticals, of Cranbury, N.J., appointed Andrew Drechsler chief financial officer.

VaxGen Inc., of Brisbane, Calif., appointed Henk Kocken vice president, quality systems.

WuXi PharmaTech, of Shanghai, China, appointed Jagdish Sastry vice president of operations and chief operating officer of SynTheAll Pharmaceutical.

XDx Inc., of South San Francisco, appointed Vikram Jog chief financial officer.

Xenogen Corp., of Alameda, Calif., appointed Kevin Hrusovsky to its board.