Sodium 2‐mercaptoethane Sulfonate (Mesna)

image [19767‐45‐4] C 2 H 5 NaO 3 S 2 (MW 164.17) InChI = 1S/C2H6O3S2.Na/c3‐7(4,5)2‐1‐6;/h6H,1‐2H2,(H,3,4,5);/q;+1/p‐1 InChIKey = XOGTZOOQQBDUSI‐UHFFFAOYSA‐M (reagent commonly used as a nucleophile, reductant, or hydrogen atom transfer catalyst) Physical Data : mp 250 °C. Solubility : H 2 O, MeOH, EtOH, DMSO. Form Supplied in : white solid; widely available. Analysis of Reagent Purity : NMR. Purification : recrystallize from water. 1 Handling, Storage, and Precautions : store under nitrogen atmosphere at 2–8 °C. Toxicity (oral) rat LD50: 4440 mg kg −1 . 2 Reactive toward electrophiles, oxidizing agents, strong bases.