21-Dehydro Dexamethasone is an impurity of Dexamethasone , a glucocorticoid anti-inflammatory agent.Melting Point: 169-174°CSolubility: DMSO, MethanolElemental Analysis: Expected: 64.69% C; 7.16% HMethod for Determining Identity: Proton NMR (DMSO-d6), 19-F NMR and MSTLC Conditions:SiO2; Dichloromethane: Methanol (9:1); Visualized with UV and AMCS; Single spot (Rf= 0.55). Storage and Stability:May be stored at RT for short-term only. Long-term storage is recommended at 4°C (dessicated). For maximum recovery of product, centrifuge the original vial prior to removing the cap.