TASK DEFINITION: In this task, you are given a sentence. You are expected to recognize the name of any form of chemical substances. Although there might be several correct answers, you need to write one of them.
PROBLEM: Sulfasalazine, a potent suppressor of lymphoma growth by inhibition of the x(c)- cystine transporter: a new action for an old drug.

SOLUTION: cystine

PROBLEM: Toxic, halogenated cysteine S-conjugates and targeting of mitochondrial enzymes of energy metabolism.

SOLUTION: cysteine S-conjugates

PROBLEM: Suppression of NF-kappaB activity by sulfasalazine is mediated by direct inhibition of IkappaB kinases alpha and beta.

SOLUTION:
sulfasalazine