16478-59-4 2,2'-(4,4'-Biphenylene)bis(2-hydroxy-4,4-dimethylmorpholinium) 2,2'-(Biphenyl)-4,4'-diylbis(2-hydroxy-4,4-dimethylmorpholinium) Hemicholinium Morpholinium, 2,2'-(1,1'-biphenyl)-4,4'-diylbis(2-hydroxy-4,4-dimethyl- (9CI) Morpholinium, 2,2'-(4,4'-biphenylene)bis(2-hydroxy-4,4-dimethyl-