2H-PYRAN-2-ONE, 4-HYDROXY-6-METHYL- 4-Hydroxy-6-methyl-2-pyrone 4-Hydroxy-6-methyl-2H-pyran-2-one 4-Hydroxy-6-methylpyran-4-one 5-18-01-00110 (Beilstein Handbook Reference) 6-Methyl-4-hydroxypyron-(2) 675-10-5 BRN 0113815 CCRIS 3600 EINECS 211-619-2 NSC 34625 Triacetic acid lactone