Yes. PFOS was the major ingredient in Scotchgard prior to 2001. It was thought to be well contained. It was thought to be not something that would be subject to long-range transport. Then there were studies done that showed very high levels of PFOS in polar bears.
In 2001, 3M took all the Scotchgard off the shelves and reformulated it to remove PFOS. It had all of those criteria. It turned out to be persistent, toxic, bioaccumulative, and subject to long-range transport.