nantradol [ levonantradol,nantradol hydrochloride,nantradol hydrochloride (6S-(3(S*), 6alpha,6aalpha,9alpha,10abeta))-isomer,nantradol hydrochloride, (3(R*),6alpha,6aalpha,9alpha,10abeta)-(+)-isomer,nantradol, ((3(R*),6alpha,6aalpha,9alpha,10abeta)-(+-))-isomer,nantradol, ((3(S*),6alpha,6aalpha,9alpha,10abeta)-(+-))-isomer,nantradol, (6R-(3(S*),6alpha,6aalpha,9alpha,10abeta))-isomer,nantradol, (6S-(3(S*),6alpha,6aalpha,9alpha,10abeta))-isomer ] cannabinoid-related analgetic with greater potency than morphine in some tests; 4 stereoisomers are mentioned in the literature: (+)-2'(S),6(R),6a(S),9(S)10a(S) [CP-53,870-1]; (-)-2'(R),6(S),6a(R),9(R