Famotidine Sulfoxide with CAS No: 90237-03-9 is an impurity standard of Famotidine. Famotidine is a medication used to reduce stomach acid production. Famotidine is falls under the class of drugs known as histamine H2-receptor antagonists. Buy high quality Famotidine Sulfoxide from Molsyns Research. Molsyns Research is one of the leading manufacturer and exporter of Famotidine Sulfoxide