Omeprazole

Molecular Formula: C17H19N3O3S
CAS Number: 73590-58-6
Appearance: A white or almost white powder

Omeprazole is used to treat certain conditions where there is too much acid in the stomach. It is used to treat gastric and duodenal ulcers, erosive esophagitis, and gastroesophageal reflux disease (GERD). GERD is a condition where the acid in the stomach washes back up into the esophagus.