Gln
amino acid
aminoalkanoic acid
acetylcholine
alpha-tocopherol
arginine
asparagine
biotin
citrulline
creatine
creatinine
dynorphin
eicosapentaenoic
franklin
inducible
inositol
lysine
nitric oxide
noradrenaline
pepsin
prostaglandin
resveratrol
ribose
solanine
vasopressin