... white crystalline powder, odorless, slightly moist. easily dissolved in methanol and ethanol , sparingly solubl CAS NO. 137862-53- ... 0.3%Residual solventsEthyl acetate :≤0.5%Dichloromethane :≤0.06%Methanol :≤0.3%N,N-Dimethylformamide: ≤0.088%Assay (HPLC ... white crystalline powder, odorless, slightly moist. easily dissolved in methanol and ethanol , sparingly soluble in ethyl acetate, slightly soluble ...