Sub Group: Chemical Impurities Catalog Number: 12420 Formula: C23H31NO8 CAS Number: 224052-51-1 Molecular Weight: 449.49 Synonyms:(4E)-6-(1,3-Dihydro-4-hydroxy-6-methoxy-7-methyl-3-oxo-5-isobenzofuranyl)-4-methyl-4-hexenoic Acid 2-(4-Oxido-4-morpholinyl)