Figure 1From: Metabolism of no-carrier-added 2-[18F]fluoro-L-tyrosine in rats Structure of fluorinated aromatic amino acids. 2-fluoro-L-phenylalanine (R2 = F, R3 = R4 = H); 3-fluoro-L-phenylalanine (R3 = F, R2 = R4 = H); 2-fluoro-L-tyrosine (R2 = F, R3 = H, R4 = OH), 3-fluoro-L-tyrosine (R3 = F, R2 = H, R4 = OH); 4-fluoro-L-phenylalanine (R2 = R3 = H, R4 = F).Back to article page