COMPOUNDS THAT MAY HAVE ANTI-INFLAMMATORY ACTIVITY HAVE THE GENERAL FORMULA (I): WHEREIN R1, R2, R3 ARE EACH INDEPENDENTLY H OR A C1-4 ALKYL GROUP OR A C2-4 ACYL GROUP; R4 AND R5 ARE EACH INDEPENDENTLY H OR A GROUP OF FORMULA -SO3R6, WHEREIN R6 IS H OR A C1-4 ALKYL GROUP OR A C2-4 ACYL GROUP; WITH THE PROVISO THAT AT LEAST ONE OF R4 AND R5 IS A GROUP OF FORMULA –SO3R6, OR A PHARMACEUTICALLY ACCEPTABLE SALT THEREOF. FIGURE 3