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In the crystal structure of a semi-synthetic opioid drug buprenorphine, C29H41NO4{systematic name: (2S)-2-[(5R,6R,7R,14S)-9α-cyclopropylmethyl-3-hydroxy-6-methoxy-4,5-epoxy-6,14-ethanomorphinan-7-yl]-3,3-dimethylbutan-2-ol}, the cyclopropylmethyl group is disordered over two sites with an occupancy factor of 0.611 (3) for the major component. One of the hydroxy groups is involved in intramolecular O—H...O hydrogen bond. The other hydroxy group acts as a proton donor in an intermolecular O—H...O interaction that connects molecules into a zigzag chain along thebaxis.
Crystallography, QD901-999, Organic Papers
Crystallography, QD901-999, Organic Papers
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