Hyaluronic acid (HA) is an anionic nonsulfated glycosaminoglycan distributed widely throughout connective epithelial and neural tissues. It is unique among glycosaminoglycans in that it is nonsulfated forms in the plasma membrane instead of the Golgi and can be very large with its molecular weight often reaching the millions.

Ac-IEVDID TFA is a short peptide sequence with Ac at the end.

Xantphos, a ligand in the coupling reaction of Buchwald, Suzuki and others, is a metal chelating ligand that can be used to catalyze the reaction.