EXHIBIT 4.2 REGISTRATION RIGHTS AGREEMENT This Registration Rights Agreement (this "Agreement") is made and entered into as of February 25, 2000, among NeoTherapeutics, Inc., a Delaware corporation (the "Company"), and the investors signatory hereto...Registration Rights Agreement • April 3rd, 2000 • Neotherapeutics Inc • Services-commercial physical & biological research • New York
ARTICLE II REPRESENTATIONS AND WARRANTIESSecurities Purchase Agreement • April 3rd, 2000 • Neotherapeutics Inc • Services-commercial physical & biological research • New York
