.alpha.,.alpha.'-(Trimethylenedinitrilo)di-o-cresol 1,3-Bis(o-hydroxybenzylideneamino)propane 120-70-7 DSPD Disalicylal propylene diamine Disalicylicenepropanediamine Disalicylidene-1,3-propanediamine Disalicylidenepropanediamine NSC166332 Phenol, 2,2'-[1,3-propanediylbis(nitrilomethylidyne)]bis- o-Cresol, .alpha.,.alpha.'-(trimethylenedinitrilo)di-