Soluble in 1 M hydrochloric acid (50 mg/ml), water (0.84 g/l at 20 °C), alcohol, DMSO (~4 mg/ml), DMF (~1.6 mg/ml), PBS(pH=7.2) (~1.7 mg/ml), methanol, water (1.7 mg/ml at 25 °C), and ethanol (31 mg/ml at 25 °C). Insoluble in diethyl ether, and n-octan