What is "conteben"

Conteben, which was used as a treatment for tuberculosis, was discovered in 1950. German scientists named Belmisch, Mietzsch and Gerhard Domagk have been credited with contributing to its discovery. In November 1947, Professor Dr. Ludwig Heilmeyer spoke of the "weak indication" ("schwache Andeutung") of Domagh's "preparation" being effective at Domagh's clinic. A few months later, Dr. Berthold Mikat spoke about the "definite improvement" ("eindeutige Besserung") of 49 from 66 tuberculosis patients, who were treated with TB-1, the precursor of conteben.