For HPLC calibrations of these above chemicals- DFF( diformyl furan), 2,5 furan dicarboxylic acid, HMF( 5-hydroxymethyl furfural), HMFCA( 5-hydroxymethyl-2 furan carboxylic acid, and FFCA( 5-formyl-furoic acid), 2,5 furan dicarboxylic acid(FDCA) please suggest suitable solvent in which all these chemicals will be soluble.