Synonyms: Gibberellin A5;4aα,7-Dihydroxy-1-methyl-8-methylenegibba-2-ene-1α,10β-dicarboxylic acid 1,4a-lactone;4aα,7-Dihydroxy-1β-methyl-8-methylenegibb-2-ene-1α,10β-dicarboxylic acid 1,4a-lactone;4aα,7-Dihydroxy-1β-methyl-8-methylenegibba-2-ene-1α,10β-dicarboxylic acid 1,4a-lactone;Bean factor II