4 '' '' -hydroxy-and `` '' 1-hydroxy-delta 6-thc reached the highest concentration in the brain but the most potent cannabinoids were delta 6-thc , 7-hydroxy- , 3 '' '' -hydroxy-delta 6-thc , and ehhc followed by 5 '' '' -hydroxy- , 4 '' '' -hydroxy- , 2 '' '' -hydroxy- , and 1 '' '' -hydroxy-delta 6-thc in decreasing order .
C0086045
t concentrati
C0006104
bra