Boc-L-Isoleucine hemihydrate, PEPTIPURE®, min. 98 %, for biochemistry, Molar mass (M) 240,31 g/mol, Storage temp. +4 °C, CAS No. [13139-16-7], EG-Nr. 236-074-8, Empirical formula C11H21NO4 · ½ H2O