(delta(sup 2,2'(3H,3'H))-Bibenzo(b)thiophene)-3,3'-dione 2-(3-Oxobenzo(b)thien-2(3H)-ylidene)benzo(b)thiophene-3(2H)-one 4,4'-Diisothioindigo 5-19-05-00281 (Beilstein Handbook Reference) 522-75-8 Antinolo Red B BRN 0088277 Benzo(b)thiophen-3(2H)-one, 2-(3-oxobenzo(b)thien-2(3H)-ylidene)- C.I. 73300 C.I. Vat Red 41 Ciba Pink B Durindone Printing Red B Durindone Red B Durindone Red BP EINECS 208-336-1 Heliane Red 5B Helindon Red BB Isothioindigo Tetra Pink B Thioindigo Thioindigo Red B Thioindigo Red S Tina Pink B Tyrian Red A-5B Vat Red 5B