4-Nitrophenyl butyrate, min. 95 %, 5 g

4-Nitrophenyl butyrate, Molar mass (M) 209,2 g/mol, Density (D) 1,19 g/cm³, Storage temp. -20 °C, CAS No. 2635-84-9, Empirical formula C₁₀H₁₁NO₄