What is tosylate disulfate? Organic Chemistry Nucleophilic Substitution Reactions (SN1 and SN2) and Elimination Reactions (E1 and E2) Leaving Groups 1 Answer Ernest Z. Feb 22, 2018 You are probably thinking of (#S#)-(5-adenosyl)-L-methionine disulfate tosylate. Explanation: See this Socratic answer. Answer link Related questions What are leaving groups in nucleophilic substitution reactions? What are considered "good" leaving groups? Do "poor" leaving groups form ions of poor stability? Does a leaving group affect the reaction rate? Why are good leaving groups weak bases? Why does an sp3-hybridized electrophile must have a leaving group (X) in order for the reaction... Are triflate, tosylate and mesylate the only good leaving groups? Are triflate, tosylate and mesylate nucleophilic? How can hydroxide and alkoxide ions (not good leaving groups) be activated by means of Lewis or... Will a primary-substituted leaving group always follow an SN2 pathway? See all questions in Leaving Groups Impact of this question 2445 views around the world You can reuse this answer Creative Commons License