Tribenuron106040-48-631 % similar 2H-Thieno[2,3-e]-1,2-thiazine-3-carboxylic acid, 4-hydroxy-2-methyl-, methyl ester, 1,1-dioxide59804-25-030 % similar 2-Amino-4-methoxy-6-methyl-1,3,5-triazine1668-54-830 % similar