Vonoprazan Impurity 25 Vonoprazan Impurity F 5-chloropyridine-3-sulfonyl chloride 3-Pyridinesulfonic acid Vonoprazan Impurity 49 Vonoprazan Impurity 13 Vonoprazan Impurity 12 Vonoprazan Impuirty 8 Vonoprazan fumarate Vonoprazan Impurity 19 Vonoprazan Impurity 20 2-[2-(2-Fluorophenyl)-2-oxoethyl]propanedinitrile 5-(3-fluorophenyl)-1-(pyridin-3-ylsulfonyl)-1H-pyrrole-3- carbaldehyde Vonoprazan Impurity 37 Fumarate Vonoprazan Impurity 29 5-phenyl-1H-pyrrole-3-carbaldehyde 2'-Fluoroacetophenone Vonoprazan Impurity 10