Definition: Compounds based on ANTHRACENES which contains two KETONES in any position. Substitutions can be in any position except on the ketone groups.
diacetylrhein [ Art brand of diacetylrhein,Negma brand of diacetylrhein,Niverpharm brand of diacetylrhein,Zondar,diacerein,diacerhein,diacetyl-rhein ] chelates with bivalent metals; a quinone which possesses redox properties; metabolized to active rhein; proposed mechanisms include inhibiting IL1 and metalloproteinases; called a slow acting symptoma