Tyrosine can be a non-important phenylalanine-derived amino acid. Tyrosine’s composition is produced a para-hydroxylated phenyl ring linked to a pentanoic acid team, that's a 5 member carbon chain with a carboxyl (C(=O)OH) group around the terminal carbon. This pentanoic acid chain is substituted at R2 with the amino team in https://tinybookmarks.com/story17541548/flualprazolam-no-further-a-mystery