Cancer is a serious health problem and is the major cause of human mortality all over the world. Difficulty in early detection and subsequent delay in treatment results in tragic consequences. Cancer is a complex disease, which is manifested in a number of ways. Treatment requires adoption of appropriate strategies. One mode of cancer treatment is through the use of cytotoxic drugs. Cytotoxic drugs have the potential to kill the cancerous cells and are usually developed after initial screening of thousands of lead compounds from various sources.