( -)-alpha-((4-Amino-5-(3,4,5-trimethoxybenzyl)-2-pyrimidinyl)amino)-3-ethoxy-4-hydroxy-alpha-toluenesulfonic acid ( -)-alpha-(4-Amino-5-(3,4,5-trimethoxybenzyl)-2-pyrimidinylamino)-3-ethoxy-4-hydroxy-alpha-toluenesulfonsaeure 81523-49-1 Vaneprim Vaneprim [INN] Vaneprimum