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Folinic acid calcium (Leucovorin Calcium) is the active metabolite of folic acid. Leucovorin is used principally as an antidote to folic acid antagonists.

6-Bromo-2-naphthyl 2-acetamido-2-deoxy-beta-D-glucopyranoside is a chromogenic substrate used for the detection of chitinase activity. Upon hydrolysis by chitinase, it releases a yellow-brown color, which is easily detected by spectrophotometry. This substrate has been used to study chitinases in various organisms, including bacteria, fungi, and insects. It can also be used to quantitate chitinase activity in various biological samples.

The Aldol® 470 N-tosyl-L-alanine ester is a high purity, high quality fluorogenic substrate for the enzyme alkaline phosphatase. It is a conjugate of the tosyl group with L-alanine and has been used as a fluorogenic substrate in various food testing applications. The Aldol® 470 N-tosyl-L-alanine ester also has several other uses including in diagnostic methods, culture media, and enzyme substrates.