3-Pyridinesulfonic acid, ethyl ester

3-Pyridinesulfonic acid, ethyl ester, also known as Ethyl pyridine-3-sulfonate, is a chemical compound with CAS number 2726830-13-1. This compound belongs to the pyridine sulfonic acid ester family and serves as an important chemical and biochemical reagent in various research and industrial applications. The molecular formula is C7H9NO3S with a molecular weight of 187.22 g/mol. The compound has a predicted boiling point of 311.7+/-15.0C and a predicted density of 1.270+/-0.06 g/cm3. The pKa value is approximately 1.52+/-0.11, indicating its acidic nature. This compound is related to Vonoprazan impurities, including Vonoprazan-031, Vonoprazan Impurity 32, Vonoprazan Fumarate Impurity 89, and Vonoprazan Impurity 84. Vonoprazan is a potassium-competitive acid blocker used for the treatment of gastric acid-related diseases. The compound is primarily supplied from China with 34 global suppliers. It is intended for non-medical purposes such as industrial applications or scientific research only, and cannot be used for clinical diagnosis or treatment of humans or animals.