L Cysteine hydrochloride hydrate Endogenous Metabolite TargetMol New Insights into the Roles of Cysteine and Homocysteine in Pathological Processes IntechOpen The transsulfuration pathway: a source of cysteine for glutathione in astrocytes Amino Acids Springer Nature Link NAC N Acetyl L Cysteine Allergy Research Group Figure 3 3, Formation of N Acetyl S (n propyl) L cysteine from 1 Bromopropane via Conjugation with Reduced Glutathione (GSH) Toxicological Profile for 1 Bromopropane NCBI Bookshelf