Alcaftadine diol Impurity

Chemical Name: (11-(1-methylpiperidin-4-ylidene)-6,11-dihydro-5H-benzo[d]imidazo[1,2-a]azepine-2,3-diyl)dimethanol

Synonym: (-)-(2R)-2-[(4,6-Dimethylpyrimidin-2-yl)oxy]-3-methoxy-3,3-diphenyl propanoic acid ; (R)-2-((4,6-Dimethylpyrimidin-2-yl)oxy)-3-methoxy-3,3-diphenylpropanoic Acid

Smile: OCC1=C(CO)N=C(N1CC2)/C(C3=C2C=CC=C3)=C4CCN(C)CC/4