Lamotrigine Dimer Impurity Catalogue No. - VL980013 CAS No. - 1373393-59-9 Molecular Formula - C₂₃H₁₁Cl₆N₅O₂ Molecular Weight - 602.08 IUPAC Name - N,N'-[6-(2,3-Dichlorophenyl)-1,2,4-triazine-3,5-diyl]bis[2,3-dichlorobenzamide