CAS 406719-77-5 appears in our catalog under these names: 4-Cyanothiophene-2-carboxylic acid, 98%, 4–Cyanothiophene–2–carboxylic acid, 4-Cyanothiophene-2-carboxylic acid 97%, 4-Cyanothiophene-2-carboxylic acid, 95%, 95%, 4-Cyanothiophene-2-carboxylic acid, 95%. Offered by: Combi-blocks, GLPBio, Ambeed, Chemat, Fluorochem. Available pack sizes: 250mg, 1g, 100mg, 5g, 10g.