CAS 3973-08-8 appears in our catalog under these names: Thiazole-4-carboxylic acid, 97%, 4-Thiazolecarboxylic Acid, >95% (HPLC), Thiazole-4-carboxylic Acid, >98.0%(GC)(T), 4-Thiazolecarboxylic acid, 97%, 4-Thiazolecarboxylic acid 98%. Offered by: Combi-blocks, TRC, TCI, Thermo Scientific (Acros), Ambeed. Available pack sizes: 25g, 5g, 100g, 500g, 1g, 10g, 1000g, 50g.