2-01-00-00480 (Beilstein Handbook Reference) 2-BUTENE-1-OL 2-Buten-1-ol 2-Butenol 2-Butenyl alcohol 3-Methylallyl alcohol 6117-91-5 AI3-14902 BRN 1719374 Crotonyl alcohol Crotonyl alcohol (VAN) Crotyl alcohol Crotyl alcohol (VAN) EINECS 228-086-7 Krotylalkohol [Czech] NSC 17480