azathioprine
noun
aza·thi·o·prine ˌa-zə-ˈthī-ə-ˌprēn 
: a purine antimetabolite C9H7N7O2S used especially as an immunosuppressant
Example Sentences
Recent Examples on the Web Other types of immunosuppressants include mycophenolate mofetil and azathioprine, which are normally used for organ transplant patients and to manage certain chronic diseases, but are sometimes prescribed off-label for very severe eczema. 
Jessie Van Amburg, Health.com, 30 Nov. 2021
Jessie Van Amburg, Health.com, 30 Nov. 2021 Word History
Etymology
aza- + thi- + purine
First Known Use
1962, in the meaning defined above
Medical Definition
azathioprine
noun
aza·thi·o·prine ˌaz-ə-ˈthī-ə-ˌprēn
: a purine antimetabolite C9H7N7O2S that is used especially as an immunosuppressant see imuran