CAS 60166-86-1 appears in our catalog under these names: 5-(Methylsulfonyl)thiophene-2-carboxylic acid, 96%, 5-(Methylsulfonyl)thiophene-2-carboxylic acid, 98%, 5-(Methylsulfonyl)-2-thiophenecarboxylic acid, 5-(Methylsulfonyl)thiophene-2-carboxylic acid, 97% , 5-(Methylsulfonyl)thiophene-2-carboxylic acid, 98%, 98%. Offered by: Combi-blocks, AmBeed, Biosynth, Thermo Scientific, Chemat. Available pack sizes: 250mg, 5g, 1g, 10g, 25g, 2,5g, 100mg, 500mg.