(3R,4S)-4,6-Dihydro-8-hydroxy-3,4,5-trimethyl-6-oxo-3H-2-benzopyran-7-carboxylic acid 3,4-Dihydro-8-hydroxy-3,4,5-trimethyl-6H-6-oxobenzo(c)pyran-7-carboxylic acid 3H-2-Benzopyran-7-carboxylic acid, 4,6-dihydro-8-hydroxy-3,4,5-trimethyl-6-oxo-, (3R-trans)- 4,6-Dihydro-8-hydroxy-3,4,5-trimethyl-6-oxo-3H-2-benzopyran-7-carboxylic acid 5-18-09-00061 (Beilstein Handbook Reference) 518-75-2 BRN 0088597 CCRIS 175 CITRININ EINECS 208-257-2 HSDB 3473 NSC 186