1,4-Butenediol 1,4-DIHYDROXY-2-BUTENE 110-64-5 2-Buten-1,4-diol 2-Butene, 1,4-dihydroxy- 2-Butene-1,4-diol AI3-07551 Agrisynth B2D Butenediol Caswell No. 120 EINECS 203-787-0 EPA Pesticide Chemical Code 220100 HSDB 5540 NSC 1260 Penitricin C