2,4-Diamino-5-(3-methoxy-4-n-butoxybenzyl)pyrimidine 2,4-Pyrimidinediamine, 5-((4-butoxy-3-methoxyphenyl)methyl)- 5-((4-Butoxy-3-methoxyphenyl)methyl)-2,4-pyrimidinediamine 80267-19-2