Swedish to English Medical Medical: Pharmaceuticals

"Although this product contains a different salt from the innovator, it has been shown preclinically, that there is no change in the safety profile of the final product, compared with the innovator, that may potentially arise from the use of a different salt or from impurities / degradants"

The term is used for the first drug of a group of drugs with essential similarities. A definition on the webb states: "innovator pharmaceutical product
The innovator pharmaceutical product is generally that which was first authorized for marketing (normally as a patented product) on the basis of documentation of efficacy, safety and quality (according to requirements at the time of the authorization). When a substance has been available for many years, it may not be possible to identify an innovator pharmaceutical product."

I need the precise Swedish term.