1. Natural
Products Center, School of Natural Resources and the Environment,
College of Agriculture and Life Sciences, University of Arizona, 250 East Valencia Road, Tucson, Arizona 85706, United States
2. NuvoGen Research LLC, P.O. Box 64326, Tucson, Arizona 85728, United States
3. University of Arizona Cancer Center, 1515 North Campbell Avenue, Tucson, Arizona 85724, United States