inactive α.β-dioxy-γ-valerolactone from β-angelicalactone;Inaktives α.β-Dioxy-γ-valerolacton aus β-Angelicalacton;3,4-Dihydroxy-5-methyl-dihydro-furan-2-on;5-Desoxy-arabinonsaeure-4-lacton;α,β-Dihydroxy-γ-Valerolacton;3,4-Dihydroxy-5-methyl-dihydrofuran-2-one;3,4-dihydroxy-5-methyloxolan-2-one