Synonyms: 4-(4'-Methyl-2,2'-bipyridyl)carboxaldehyde;4-Carboxaldehyde-4'-methyl-2,2'-bipyridine;4-Formyl-4'-methyl-2,2'-bipyridine;4-Methyl-2,2'-bipyridine-4'-carbaldehyde;4-Methyl-2,2'-bipyridine-4'-carboxaldehyde;4'-Dimethyl-2,2'-bipyridine-4-carboxaldehyde;4'-Formyl-4-methyl-2,2'-bipyridyl;4'-Methyl-2,2'-bipyridine-4-carbaldehyde;4'-Methyl-2,2'-bipyridine-4-carboxaldehyde;4'-Methyl-2,2'-bipyridyl-4-carboxaldehyde;