Synonyms: 1-Phenanthrenecarboxylicacid,1,2,3,4,4a,4b,5,6,7,9,10,10a-dodecahydro-1,4a-dimethyl-7-(1-methylethyl)-,2,2-bis[[[[1,2,3,4,4a,4b,5,6,7,9,10,10a-dodecahydro-1,4a-dimethyl-7-(1-methylethyl)-1-phenanthrenyl]carbonyl]oxy]methyl]-1,3-propanediylester (9CI); Dihydroabietic acid, pentaerythrityl ester; Pentaerythritoltetrakis(dihydroabietate)