(1,3-Diaminopropane-1,1,3,3-tetrayl)tetraphosphonic acid compd. with glutaric acid Glutaric acid compd. with (1,3-diaminopropane-1,1,3,3-tetrayl)tetraphosphonic acid Phosphonic acid, (1,3-diaminopropane-1,1,3,3-tetrayl)tetra-, compd. with glutaric acid SZ7563050