1,3-Dihydroxypropane 1,3-PROPANEDIOL 1,3-Propylene glycol 1,3-Propylenediol 2-(Hydroxymethyl)ethanol 2-Deoxyglycerol 4-01-00-02493 (Beilstein Handbook Reference) 504-63-2 757125-93-2 AI3-01851 BRN 0969155 EINECS 207-997-3 NSC 65426 PG Trimethylene glycol beta-Propylene glycol omega-Propanediol