Naphthyridine-based lanthanide complexes worked as magnetic resonance imaging contrast for guanosine 5′-monophosphate in vivo

New lanthanide complexes containing 2-amino-7-methyl-1,8-naphthyridine triple hydrogen bonding trigger was achieved for selective magnetic resonance imaging of GMP over other ribonucleotide polyphosphates in aqueous media and in vivo.