1. Labeled Compounds Department , Hot Labs Center , Egyptian Atomic Energy Authority , P.O. Box 13759 , Cairo , Egypt , E-mail:
2. Labeled Compounds Department , Hot Labs Center , Egyptian Atomic Energy Authority , P.O. Box 13759 , Cairo , Egypt
3. Health Radiation Research Department (Radiodiagnosis Unit) , National Center for Radiation Research and Technology, Atomic Energy Authority , Cairo , Egypt
4. Department of Organic Pharmaceutical Chemistry , Faculty of Pharmacy, Delta University , Mansoura , Egypt