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Potassium 4-Guaiacolsulfonate is the pottasium salt of 4-Hydroxy-3-methoxybenzenesulfonic Acid (H972888), which has been shown to have antitumor activity mice and rats inoculated with leukemia, adenocarcinoma, carcinosarcoma, and ovarian carcinoma cells. Potassium 4-Guaiacolsulfonate has also been used as an expectorant.

ChEBI: Potassium 4-hydroxy-3-methoxybenzene-1-sulfonate is an organic potassium salt having 4-hydroxy-3-methoxybenzene-1-sulfonate as the counterion. Commonly used as an expectorant. It has a role as an expectorant. It is an organosulfonate salt and a potassium salt. It contains a 4-hydroxy-3-methoxybenzene-1-sulfonate.