Protocatechuic acid-2-glucoside (compound 6) is a phenolic acid glycoside. Protocatechuic acid-2-glucoside can be found in the rhizome and radix of Millettia speciosa Champ [1].
References:
[1]. Zhang J, et al. Phytochemistry and Antioxidant Activities of the Rhizome and Radix of Millettia speciosa Based on UHPLC-Q-Exactive Orbitrap-MS. Molecules. 2022 Oct 31;27(21):7398.
References:
[1]. Zhang J, et al. Phytochemistry and Antioxidant Activities of the Rhizome and Radix of Millettia speciosa Based on UHPLC-Q-Exactive Orbitrap-MS. Molecules. 2022 Oct 31;27(21):7398.