Table 1 . The solubility behavior of G₁-(COOH) and G₂-(COOH) in common organic solvents: soluble (+) and insoluble (–) .

Sample	G 1 -(COOMe)			G 1 -(COOH)			G 2 -(COOMe)
Solvents	Soluble	Insoluble	Swell	Soluble	Insoluble	Swell	Soluble	Insoluble	Swell
ichloromethane	+	-	-	-	-	+	+	-	-
DMF	+	-	-	+	-	-	+	-	-
THF	-	+	-	-	+	-	-	+	-
Methanol	-	+	-	-	-	+	-	+	-
Ethanol	-	+	-	-	-	+	-	+	-
Methanol-H2O	-	-	+	+	-	-	-	-	+
Eehanol-H2O	-	-	+	+	-	-	-	-	+
Chloroform	+	-	-	-	-	+	+	-	-