preparation of 5,6-diphenyl-2-hydroxypyrazine_kain industrial additive
background and overview[1] 5,6-diphenyl-2-hydroxypyrazine is a pharmaceutical intermediate that can be prepared in one step from benzoyl and aminoacetamide hydrochloride. there are reports in the literature that 5,6-diphenyl-2-hydroxypyrazine can be used to prepare ip receptor agonists (compound i). the diseases that ip receptor agonists can treat mainly include pulmonary arterial hypertension (pah), pah related to…

