11-Nor-8-carboxy-thc 11-Nor-delta(8)-tetrahydrocannabinol-9-carboxylic acid 11-Nor-delta(8)-thc-cooh 39690-06-7 6H-Dibenzo(b,d)pyran-9-carboxylic acid, 6a,7,10,10a-tetrahydro-1-hydroxy-6,6-dimethyl-3-pentyl-, (6aR-trans)- delta(6)-Tetrahydrocannabinol-7-oic acid delta(8)-Tetrahydrocannabinol-11-oic acid delta(8)-Thc-11-oic acid