4-(Methylthio)phenylboronic acid（Cat No.:L015296）is an organoboron compound featuring a methylthio group at the para-position of a phenyl ring bearing a boronic acid functional group. It is commonly used in Suzuki-Miyaura cross-coupling reactions for forming carbon–carbon bonds in the synthesis of biaryl compounds, pharmaceuticals, and advanced organic materials. The electron-donating methylthio group can influence the reactivity and electronic properties of the molecule, enabling selective transformations. Its boronic acid moiety allows for high reactivity under mild conditions, making this compound a versatile and valuable intermediate in modern organic and medicinal chemistry.