13021-39-1 3-Cyclobutene-1,2-dione, 3,4-dihydroxy-, dipotassium salt
125826-42-8 Hexanedioic acid, polymer with 1,2-ethanediol, hydrazine, 3-hydroxy-2-(hydroxymethyl)-2-methylpropanoic acid and 1,1-methylenebis[4-isocyanatocyclohexane], compd. with N,N-diethylethanamine