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18,19-Dehydrobuprenorphine (HS-599) is a didehydro derivative of buprenorphine. It has about twice the potency of buprenorphine. It has produced a long-lasting antinociceptive response in animal tests.
18,19-Dehydrobuprenorphine never induced conditioned place-preference in test animals, unlike buprenorphine and morphine.
18,19-Dehydrobuprenorphine has about three times higher affinity for the ?-opioid receptor but lower affinity for ?- and ?-opioid receptors when compared with buprenorphine.
Video 18,19-Dehydrobuprenorphine
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Source of article : Wikipedia