Tyrosine is a non-crucial phenylalanine-derived amino acid. Tyrosine’s framework is built a para-hydroxylated phenyl ring linked to a pentanoic acid group, which can be a five member carbon chain with a carboxyl (C(=O)OH) group to the terminal carbon. This pentanoic acid chain is substituted at R2 by having an amino https://revivalschem.com/product/buy-green-mandala-mix-3/