- A novel potent radical scavenger, 8-(4-fluorophenyl)-2-((2E)-3-phenyl-2-propenoyl)-1,2,3,4-tetrahydropyrazolo[5,1-c] [1,2,4]triazine (FR210575), prevents neuronal cell death in cultured primary neurons and attenuates brain injury after focal ischemia in rats. Iwashita, A., Maemoto, T., Nakada, H., Shima, I., Matsuoka, N., Hisajima, H. J. Pharmacol. Exp. Ther. (2003)