Sausalito, California-based Autodesk Inc said it and Hypercube Inc agreed to end an agreement under which Autodesk sold, marketed and distributed the HyperChem scientific modelling software because Autodesk has now decided to mobilise its strengths in the design automation and multimedia markets; Hypercube plans to continue to market HyperChem, but Autodesk is to fulfull orders with existing distributors for 90 days after January 21.