1,2-BUTANEDIOL 1,2-Butylene glycol 1,2-Dihydroxybutane 26171-83-5 4-01-00-02507 (Beilstein Handbook Reference) 584-03-2 AI3-07554 BRN 0969169 Butanediol, 1,2- EINECS 209-527-2 HSDB 1507 NSC 24242 alpha-Butylene glycol alpha-Butyleneglycol