(10-Methoxy-4H-benzo(4,5)cyclohepta(1,2-b)thien-4-ylidene)acetic acid (10-Methoxy-4H-benzo(4,5)cyclohepta(1,2-b)thiophene-4-ylidene)acetic acid 10-Mbctya 128439-98-5 Acetic acid, (10-methoxy-4H-benzo(4,5)cyclohepta(1,2-b)thien-4-ylidene)- IX 207,887 IX 207-887