Patent ID: 7815894

Claim:
A synthetic glycerophosphocholine (GPC) compound consisting essentially of: the synthetic GPC compound derived by replacing all original 16 O atoms of GPC with 17 O atoms and including at least one additional modification selected from the group consisting of: replacing 17 O atoms of the synthetic GPC compound with 15 O atoms, replacing at least one 17 O atom of the synthetic GPC compound in a phosphoryl group with a 12 CH 2 group, and either replacing 14 N atoms of the synthetic GPC compound with 13 N atoms, replacing 12 C atoms of the synthetic GPC compound with 11 C atoms, replacing hydrogen atoms on methyl moieties of the synthetic GPC compound with 19 F atoms, or replacing hydrogen atoms on methyl moieties of the synthetic GPC compound with 18 F atoms.