... -L-Cysteine is antioxidant CAS# 616-91-1 Product Name: N-Acetyl-L-Cysteine Synoyms: acetyl-cysteine; Acetylcysteine, Cysteine, Cysteine ... , L-Cysteine HCl, NAC, N-Acetil Cisteína, N-Acétyl Cystéine, N-Acetyl-L-Cysteine,N-Acetylcysteine,N-Acetyl-L-Cysteine. CAS No ... 3 Molecular Formula: C5H9NO3S Molecular Weight: 163.20 Function: 1. N-acetyl-cysteine is the acetylated form of L-cysteine which ...