CAS 137191-59-4 appears in our catalog under these names: Poly(3,4′–didodecyl(2,2′–bithiophene)–5,5′–diyl), Poly(3-dodecylthiophene-2,5-diyl), POLY(3-DODECYLTHIOPHENE-2,5-DIYL), REGI&, POLY(3-DODECYLTHIOPHENE-2,5-DIYL),. Offered by: GLPBio, Biosynth, Sigma-Aldrich. Available pack sizes: 100mg, 25mg, 500mg, 1000mg, 1G.