Rebeccamycin is an antitumor antibiotic+ inhibits DNA topoisomerase I. Rebeccamycin appears to exert its primary antineoplastic effect by poisoning topoisomerase I. It also has a negligible effect on protein kinase C and topoisomerase II.
L-Penicillamine is a medication primarily. It is used for the treatment of Wilson's disease. It is also used for people with kidney stones who have high urine cystine levels, rheumatoid arthritis, copper poisoning, and lead poisoning.
Pralidoxime Iodide is an effective AChE reactivator and antidote for organophosphorus poisoning, reactivating AChE inhibited by nerve agents through nucleophilic attack on the phosphorus centre of the neurotoxin.