JD Karkas,* WT Ashton, L. F. Canning, R. Liou, J. Germershausen, R. Bostedor, B. Arison, AK Field, and RL Tolman Merck Sharp and Dohm. Research Laboratories, Rahway, New Jersey 07065, and West Point, Pennsylvania 19486. Received July 24, 1985 ... The antiherpetic agent 9- [ (2,3-dihydroxy-l-propoxy)methyl]guanine (iNDG) is phosphorylated by HSVl thymidine kinase, and its phosphorylated products inhibit DNA polymerase activity. iNDG exists in ...