1-Aziridinepropanoic acid, 2-((3-(1-aziridinyl)-1-oxopropoxy)methyl)-2-(hydroxymethyl)-1,3-propanediyl ester 215302-44-6 57116-45-7 EINECS 260-568-2 Pentaerythritol tris(3-aziridin-1-ylpropionate) Pentaerythritol, tris(beta-(N-aziridinyl)propionate) ester Pentaerythritol-tris-(beta-(N-aziridinyl)propionate) TAZO Xama 7