EXHIBIT 4.2 CALLISTO PHARMACEUTICALS, INC. NON-QUALIFIED STOCK OPTION AGREEMENTNon-Qualified Stock Option Agreement • October 8th, 2004 • Callisto Pharmaceuticals Inc • Pharmaceutical preparations • New York
Contract Type FiledOctober 8th, 2004 Company Industry Jurisdiction
EXHIBIT 4.3 CALLISTO PHARMACEUTICALS, INC. NON-PLAN NON-QUALIFIED STOCK OPTION AGREEMENTNon-Plan Non-Qualified Stock Option Agreement • October 8th, 2004 • Callisto Pharmaceuticals Inc • Pharmaceutical preparations • New York
Contract Type FiledOctober 8th, 2004 Company Industry Jurisdiction