13021-40-4 5,6-dihydroxycyclohex-5-ene-1,2,3,4-tetrone 5-cyclohexene-1,2,3,4-tetrone, 5,6-dihydroxy- InChI=1/C6H2O6/c7-1-2(8)4(10)6(12)5(11)3(1)9/h7-8