6902-77-8 CYCLOPENTA(c)PYRAN-4-CARBOXYLIC ACID, 1,4a-alpha,5,7a-alpha-TETRAHYDRO-1-HYDROXY Cyclopenta(c)pyran-4-carboxylic acid, 1,4a-alpha,5,7a-alpha-tetrahydro-1-hydroxy-7-(hydroxymethyl)-, methyl ester Genipin