N-Acetyl-L-cysteine, min. 98 %, for biochemistry, Molar mass (M) 163,20 g/mol, Density (D) 1,48 g/cm³, Flash point (flp) 200,4 °C, Boiling point (bp) 143,9 to 145,3 °C, Storage temp. +4 °C, CAS No. [616-91-1], EG-Nr. 210-498-3, Empirical formula C5H9NO3S