... -4-hydroxy-6-oxo-2h-pyran-2-yl)ethyl)-1-naphthalenyleste;7-beta,8-beta(2s*,4s*), ... TETRAHYDRO-4-HYDROXY-6-OXO-2H-PYRAN-2-YL]ETHYL]-1-NAPHTHALENYLY-2,2-DIMETHYL BUTANOATE;2,2- ... TETRAHYDRO-PYRAN-2-YL)-ETHYL]-3,7-DIMETHYL-1,2,3,7,8,8A-HEXAHYDRO-NAPHTHALEN-1-YL ESTER CAS: ... white or almost white,crystalline powderIdentificationIR/HPLCAssay98.0-101.1%Specific optical rotation+285 - +298Heavy metal< 20ppmLoss ...