Carbocisteine Lactam is an impurity of the mucolytic agent Carbocisteine.Atmosphere: Inert gasMelting Point:222-224°CSolubility:DMSO, WaterMethod for Determining Identity: Proton NMR (DMSO-d6) and MSTLC Conditions: C18; Water (100%). Visualized with AMCS (single spot; Rf =0.47.Storage and Stability:Store at -20°C under inert atmosphere. Caution: Hygroscopic. For maximum recovery of product, centrifuge the original vial prior to removing the cap.