Supplier: 1, 4-cyclohexanedione, 99%, 1, 4-cyclohexanedione monoethylene ketal, 99%, 5-hydroxymethyl thiazole, 98%; 5-bromophthalide, 99%, barbituric acid, 99%, dimethyl succinyl succinate, 99%, dsd acid, diisopropyl succinate, 99%, dimethyl acetyl succinate, 99%, dimethyl succinate, 99%, diethyl succinate
