API
IMPURITY
CHEMICAL NAME
STRUCTURE
2
Lapatinib

LAPATINIB Impurity

 N-[3-Chloro-4-[(3-fluorophenyl)methoxy]phenyl]-6-[5-[[[-2-(methylsulphenyl)ethyl]imino]methyl]-2-furanyl]-4-quinazoliamine Lapatinib_LAPATINIB Impurity_5-[4-[3-chloro-4
Lapatinib

LAPATINIB Dimer Impurity

 N-(3-chloro-4-(3-fluorobenzyloxy)phenyl)-6-(5-((((5-(4-(3-chloro-4-(3-fluorobenzyloxy)phenylamino)quinazolin-6-yl)furan-2-yl)mehtyl)(2-(methylsulfonyl)ethyl)amino)methyl)furan-2-yl)quinazolin-4-amine( DIMER IMPURITY) Lapatinib_LAPATINIB Dimer Impurity_N-(3-chloro-4