... Cysteine HCl, NAC, N-Acetil Cisteína, N-Acétyl Cystéine, N-Acetyl-L-Cysteine,N-Acetylcysteine,N-Acetyl-L-Cysteine. ... also an antioxidant that is helpful against viruses.2. N-Acetyl-L-Cysteine has been used as a liver ... .04% Max. Melting Point:106 to 110 Degree C Heavy Metals(Pb):0.001% Max. Organic Volatile Impurities ... % Max.Assay:98.0 to102.0% PH:2.0 to 2.8N-Acetyl-L-Cysteine is our featured products, ...