.DELTA.3,4-Dimethylheptyltetrahydrocannabinol 32904-22-6 6H-Dibenzo[b,d]pyran-1-ol, 3-(1,2-dimethylheptyl)-7,8,9,10-tetrahydro-6,6,9-trimethyl- Abbott 40824 DMHP Dimethylheptyl-.DELTA.6a-10a-tetrahydrocannabinol Dimethylheptylpyran (cannabinol analog) EA 1476 NSC25516 SP 8