1,3-Propanediol, bis(4-aminobenzoate) 1,3-Propanediol, di(p-aminobenzoate) 174405-43-7 57609-64-0 CCRIS 3552 EINECS 260-847-9 Polacure 740M Propane-1,3-diyl bis(4-aminobenzoate) Trimethylene glycol di(p-aminobenzoate)