CAS 61320-67-0 appears in our catalog under these names: 4-Ethyl 2-methyl 5-amino-3-methylthiophene-2,4-dicarboxylate, 95%, 5-Amino-3-methyl-thiophene-2,4-dicarboxylic acid -4-ethyl ester 2-methyl ester. Offered by: Combi-blocks, Fluorochem. Available pack sizes: 250mg, 5g, 1g, 25g.