13-Isopropyl-7-oxopodocarpa-8,11,13-trien-15-oic acid 18684-55-4 4-10-00-02942 (Beilstein Handbook Reference) 7-Ketodehydroabietic acid 7-OXODEHYDROABIETIC ACID BRN 3216723 Podocarpa-8,11,13-trien-15-oic acid, 13-isopropyl-7-oxo-