4-Pentan-3-ylbenzenesulfonic acid
Sodium polystyrene sulfonate is a medication used to treat abnormally high potassium levels. It may be taken orally or by rectum, as an enema, and functions as a potassium-binding resin in the intestines. It is also an effective topical microbicide and spermicide, inhibiting the genital transfection of, among others, HIV.