CAS 16694-18-1 appears in our catalog under these names: 4-Bromothiophene-2-carboxylic acid, 98%, 4-Bromo-2-thiophenecarboxylic acid, 95% , 4-Bromo-2-thiophenecarboxylic Acid, >98.0%(GC)(T), 4-Bromo-2-thiophenecarboxylic acid 98%, 4-Bromo-2-thiophenecarboxylic acid, 98%, 98%. Offered by: Combi-blocks, Thermo Scientific, TCI, Ambeed, Chemat. Available pack sizes: 25g, 5g, 100g, 500g, 1g, 10g.