Mückter, Kunz and Keller published an article about Thalidomide. The paper emphasized the “instant and long‐lasting sedative effect”, the “unusual small amount of side effects” and the “extreme non-toxicity” of Thalidomide. According to the paper, clinical trials with humans were therefore justified.
Source: Anklageschrift (indictment) from 1967, today archived at the National Archives of North Rhine-Westphalia in Duisburg, Germany (Rheinland Division, Gerichte Rep. 139, No. 1–396), p. 47