14451-99-1 4,6-Dimethylpyrimidin-2-ol 1,2,3,4-tetrahydro-2-methyl-1,4-dioxonaphthalene-2-sulphonic acid (1:1) CCRIS 7573 EINECS 238-435-5 Menadione dimethyl-pyrimidinol bisulfate Menadione dimethylpyrimidinol bisulfite