2-methyl-3-hydroxy quinoline-4-carboxylicacid CAS NO 117-57-7 molecular formula C11H9NO3 molecular weight 203.18 specification pure content>=97% (dry, normalization) melting point>=224-228C properties yellow powder, unsolvable in strong acid, water and general organic solvent, freely soluble in alkali uasge it is the major raw material of advanced disperse yellow E-3G and 3G, widely used in pharmacy and other organic synthesis pakage 25kg woven bag or iron drum with nylon film liner storage stored in dye , shady and cool places