0001193125-05-153938 Sample Contracts

AMENDMENT NO. 1 CONVERTIBLE PROMISSORY NOTE

Convertible Promissory Note • August 2nd, 2005 • Rentech Inc /Co/ • Paints, varnishes, lacquers, enamels & allied prods

• Contract Type
  Convertible Promissory Note
• Filed
  August 2nd, 2005
• Company
  Rentech Inc /Co/
• Industry
  Paints, varnishes, lacquers, enamels & allied prods

This Amendment No. 1 (this “Amendment”), effective as of May 20, 2005, by and between Rentech, Inc., a Colorado corporation (“Rentech”), and David P. Zimel (“Zimel”).

AMENDMENT NO. 1 WARRANT TO PURCHASE COMMON STOCK

Purchase Common Stock • August 2nd, 2005 • Rentech Inc /Co/ • Paints, varnishes, lacquers, enamels & allied prods

• Contract Type
  Purchase Common Stock
• Filed
  August 2nd, 2005
• Company
  Rentech Inc /Co/
• Industry
  Paints, varnishes, lacquers, enamels & allied prods

This Amendment No. 1 (this “Amendment”), is made and entered into effective as of June 30, 2005, by and between Rentech, Inc., a Colorado corporation (“Rentech”), and Monarch Pointe Fund, Ltd., Mercator Momentum Fund, LP, Mercator Momentum Fund III, LP, Pentagon Special Purpose Fund, Ltd. (collectively, the “Purchasers”) and M.A.G. Capital, LLC (“MAG”).