Synonyms: 6H-Dibenzo[b,d]pyran-9-carboxylicacid, 6a,7,8,10a-tetrahydro-1-hydroxy-6,6-dimethyl-3-pentyl-, (6aR-trans)-;(-)-11-Nor-9-carboxy-D9-THC; 11-Nor-9-carboxy-9D-tetrahydrocannabinol; 11-Nor-9-carboxy-D9-tetrahydrocannabinol; 11-Nor-D9-tetrahydrocannabinol-9-carboxylicacid; 9-Carboxy-11-nor-D9-tetrahydrocannabinol; l-11-Nor-9-carboxy-D9-tetrahydrocannabinol; D1-Tetrahydrocannabinol-7-oic acid