Bayer is infamous for its letters that survived of it negotiating to buy 150 Jewish women for experiments. They were on good condition, they all died from the experimental sleeping pill. They also tested vaccines. Also its parent company made zyklon B.
Example of the letter:
“Received the order for 150 women. Despite their macerated condition they were considered satisfactory. We will keep you informed of the developments regarding the experiments,” “The experiments were performed. All test persons died. We will contact you shortly about a new shipment.”
https://morningstaronline.co.uk/a-ca73-the-dark-history-of-b...