Eisai, Inc., was originally incorporated in November, 1987 and currently has two sites located in Andover, MA. Work at these sites currently involves the areas of administration and drug discovery. Eisai, Inc. is a wholly owned subsidiary of the parent company, Eisai Co., Ltd. The company was established to identify new biologically active compounds destined for future pharmaceutical development. The company achieves its goals by combining biochemical exploration of new target areas with innovative synthetic chemical research. Additionally, genomic research targets the discovery of causative genes underlying human diseases which may lead to the discovery of novel potential therapeutic agents. Eisai’s role in Andover is to conduct basic discovery research toward the final goal of developing prescription drugs for human health care.