25818-48-8 4-Pyrimidinecarboxylic acid, 5-((4-methoxyphenyl)thio)-2-(methylthio)- 5-((4-Methoxyphenyl)thio)-2-(methylthio)-4-pyrimidinecarboxylic acid 5-25-07-00008 (Beilstein Handbook Reference) BRN 0823538