MKC9989 是羟基芳基醛 (HAA) 的抑制剂。 MKC9989 还抑制 IRE1α，IC50 为 0.23 至 44 μM。

Antho-rwamide I is an anthozoan neuropeptide.

4-Methylumbelliferyl-α-D-Glucopyranoside (4-Methylumbelliferyl-α-D-Glucose) is a fluorescent substrate for α-glucosidase, which releases the fluorescent moiety 4-methylumbelliferyl (4-MU) upon cleavage. 4-MU has pH-dependent fluorescence excitation activity, with excitation wavelengths of 320 nm at low pH (1.97-6.72) and 360 nm at high pH (7.12-10.3), respectively.