prontosil

noun

1. (uncountable)The antibacterial drug 4-[(2,4-diaminophenyl)azo]benzenesulfonamide.

   “In the field of therapeutic aids, chemotherapy and antibiotics have been completely developed since that time. We had prontosil and neoprontosil and thought we were very fortunate.”

   “Since 1935 when Domagk demonstrated that prontosil provided effective therapy in a murine pneumococcal infection model, the use of animal infection models has become an integral part of the evaluation of new antimicrobial agents and new therapeutic approaches for clinical trials in humans.”