Fluorescent Substrate for Glu-Specific Proteases is a chromogenic substrate specifically recognized by V8 protease [1].

Fluorescent Substrate for Asp-Specific Proteases selectively cleaves the Asp-Val bond [1].

Boc-Val-Pro-Arg-MCA hydrochloride (Boc-Val-Pro-Arg-MCA HCl) is a sensitive fluorescent substrate for the determination of trypsin-like serine proteases activity.

N-Acetyl-DL-phenylalanine β-naphthyl ester serves as a chromogenic substrate specifically for chymotrypsin and microbial serine proteases like subtilisin [1]. This aromatic amino acid ester exhibits color changes upon enzymatic cleavage, facilitating the monitoring of enzyme activity.