Parenteral sulfonamides for dysentery, enteritis, and prevention of intestinal infection after surgery.

5-Hydroxymethyl-2-furancarboxylic acid (Sumiki's acid) is a naturally occurring human metabolite. Sumiki's acid was first identified in the urine of a leukemia patient who was excreting an abnormal amount of its glycine derivative. Sumiki's acid has been found to be a byproduct of the fungus Aspergillus and probably other species of fungi and yeast as well.

Ac-Gly-Ala-Lys(Ac)-AMC is a fluorogenic substrate for the determination of protease activity. Ac-Gly-Ala-Lys(Ac)-AMC undergoes hydrolysis and releases the fluorescent product 7-amino-4-methylcoumarin (AMC). AMC is fluorescent under UV light and can emit a fluorescent signal.