1. Department of Veterinary and Biomedical Sciences, The Center of Molecular Toxicology and Carcinogenesis, The Pennsylvania State University, University Park, Pennsylvania 16802
2. Department of Chemistry and Biochemistry, Bloomsburg University of Pennsylvania, Bloomsburg, Pennsylvania 17815
3. Non-clinical Research Institute, Chemon, Yangji-Myeon, Cheoin-Gu, Yongin-Si, Gyeonggi-Do 17162, Korea
4. Departments of Pharmacology, Pathology, Dermatology, Surgery, The Melanoma and Skin Cancer Center, and The Melanoma Therapeutics Program, The Pennsylvania State University, Hershey, Pennsylvania 17033;
5. Laboratory of Metabolism, National Cancer Institute, Bethesda, Maryland 20892