EXHIBIT 4.2 REGISTRATION RIGHTS AGREEMENT This Registration Rights Agreement (this "Agreement") is made and entered into as of November 19, 1999, among NeoTherapeutics, Inc., a Delaware corporation (the "Company"), and the investors signatory hereto...Registration Rights Agreement • December 7th, 1999 • Neotherapeutics Inc • Services-commercial physical & biological research • New York
1 EXHIBIT 4.6 NEITHER THESE SECURITIES NOR THE SECURITIES INTO WHICH THESE SECURITIES ARE EXERCISABLE HAVE BEEN REGISTERED WITH THE SECURITIES AND EXCHANGE COMMISSION OR THE SECURITIES COMMISSION OF ANY STATE IN RELIANCE UPON AN EXEMPTION FROM...Neotherapeutics Inc • December 7th, 1999 • Services-commercial physical & biological research • New York
ARTICLE II REPRESENTATIONS AND WARRANTIESSecurities Purchase Agreement • December 7th, 1999 • Neotherapeutics Inc • Services-commercial physical & biological research • New York
1 EXHIBIT 4.5 NEITHER THESE SECURITIES NOR THE SECURITIES INTO WHICH THESE SECURITIES ARE EXERCISABLE HAVE BEEN REGISTERED WITH THE SECURITIES AND EXCHANGE COMMISSION OR THE SECURITIES COMMISSION OF ANY STATE IN RELIANCE UPON AN EXEMPTION FROM...Neotherapeutics Inc • December 7th, 1999 • Services-commercial physical & biological research • New York
