Pyridine,4,4'-(2,4-diphenyl-1,3-cyclobutanediylidene)bis[1,4-dihydro-1-methyl-,trans-
CAS No. 64449-24-7
二氢-5,5-二甲基噻吩-3(2H)-酮
Ba 138/111 32862-59-2