Putrescin, min. 99 %, for biochemistry, Molar mass (M) 88,15 g/mol, Density (D) 0,877 g/cm³, Flash point (flp) 45 °C, Boiling point (bp) 158 to 159 °C, CAS No. [110-60-1], UN-Nr. 3286, EG-Nr. 203-782-3, Empirical formula C4H12N2