Product Description: 4-Methylumbelliferyl butyrate (4-MUB) is a coumarin-based fluorogenic substrate used for the identification of M. catarrhalis C4- esterase. 4-Methylumbelliferyl butyrate can converse to the blue-emissive 4-methylumbelliferone (4-MU; HY-N0187)[1].
Formula: C14H14O4
References: [1]Uisung Lee, et al. Selective Butyrate Esterase Probe for the Rapid Colorimetric and Fluorogenic Identification of Moraxella catarrhalis. Anal Chem. 2020 Dec 15;92(24):16051-16057.