Credited by reviews with first synthesising bendamustine, with Krebs
Ozegowski
Institute for Microbiology and Experimental Therapy, Jena (as given in a 2007 review)
A 2007 review says bendamustine was first synthesised in the early 1960s in Jena, East Germany, by Ozegowski and Krebs; a 2014 review gives 1963. Both reviews give surnames only.
Sources
Forero-Torres A, Saleh MN. Bendamustine in non-Hodgkin lymphoma: the double-agent that came from the Cold War. Clin Lymphoma Myeloma. 2007;8 Suppl 1:S13-7.
Derenzini E, Zinzani PL, Cheson BD. Bendamustine: role and evidence in lymphoma therapy, an overview. Leuk Lymphoma. 2014;55(7):1471-8.