Hydrogen chloride, 2.5M. in ethanol is used in the manufacturing of pharmaceuticals to get a hydrochloride salt. For example, ranitidine base is converted to ranitidine hydrochloride, which is used as anti ulcerative drug.
This Thermo Scientific Chemicals brand product was originally part of the Alfa Aesar product portfolio. Some documentation and label information may refer to the legacy brand. The original Alfa Aesar product / item code or SKU reference has not changed as a part of the brand transition to Thermo Scientific Chemicals.