7-Hydroxymethotrexate is the major metabolite of Methotrexate.Methotrexate is an inhibitor of folic acid, inhibiting dihydrofolate reductase, which prevents the conversion of folic acid to tetrahydrofolate, and inhibiting DNA synthesis.

Carbobenzoxyphenylalanine is a thermolysin inhibitor.The protease can be inhibited by the serine specific reagents phenylmethanesulfonyl fluoride and diisopropyl fluorophosphate and the alkylating reagent, carbobenzoxyphenylalanine chloromethyl ketone, in the presence of organic solvents at 1 mM concentration.?

[Arg8]-Vasotocin (TFA) is a nonmammalian vertebrate neurohypophyseal peptide.