Phosphoethanolamine (PE) is a phosphomonoester metabolite of the phospholipid metabolism. PE is a precursor of phospholipid synthesis and a product of phospholipid breakdown.

Xanthosine is produced by guanine-free mutants of bacteria e.g. Bacillus subtilis Aerobacter aerogenes. Xanthosine monophosphate is an intermediate in purine metabolism formed from IMP and forming GMP.

Amyloid β-Protein (1-46) is aAβ Fragment.