.alpha.,.omega.-Pentanediol .omega.-Pentanediol 1,5-Dihydroxypentane 1,5-Pentamethylene glycol 1,5-Pentanediol 1,5-Pentylene glycol 111-29-5 NSC5927 Pentamethylene glycol Pentane-1,5-diol Pentylene glycol WLN: Q5Q