Phytic acid exists in all eukaryotic cells. In plants it is known to function as a [PO4]3? storage depot and precursor for other inositol phosphates and pyrophosphates. It can be used clinically as a complexing agent for removal of traces of heavy metal ions. It acts also as a hypocalcemic agent.

L-Propargylglycine is an inhibitor of the enzyme.l-propargylglycine (LPG) irreversibly inhibited the enzyme from Crotalus adamanteus and Crotalus atrox in a dose- and time-dependent manner.?Inactivation was irreversible which was significantly protected by the substrate l-phenylalanine.?

TMB dihydrochloride is an enzyme-linked immunosorbent assays (ELISA) and an excellent colorimetric substrate for the detection of horseradish peroxidase (HRP)-labeled probes used in staining procedures immunohistochemistry.