1,2,3,4,4a,9,10,10a-Octahydro-1,4a-dimethyl-7-(1-methylethyl)-1-phenanthrenecarboxylic acid 1-Phenanthrenecarboxylic acid, 1,2,3,4,4a,9,10,10a-octahydro-1,4a-dimethyl-7-(1-methylethyl)-, [1R-(1.alpha.,4a.beta.,10a.alpha.)]- 13-Isopropylpodocarpa-8,11,13-trien-15-oic acid 1740-19-8 Abieta-8,11,13-trien-18-oic acid Abietic acid, dehydro- DEHYDROABIETIC ACID DHA Dehydroabietate NSC2952 Podocarpa-8,11,13-trien-15-oic acid, 13-isopropyl-