Dextromethorphan chemical structure

FIG. 22 Chemical structures of (a) dextromethorphan hydrobromide, (b) papaverine hydrochloride, (c) quinine hydrochloride, and (d) berberine chloride. 

Fig. 10.1 Chemical structures of NMDA and AMPA antagonists used for the treatment of ischemic injury in animal models. PCP (a) MK-801 (b) Dextrorphan (c) and Dextromethorphan (d)...

Synonyms DM Dextromethorphan hydrobromide Demorphan 3-Methoxy- -methylmorphinan d-Methorphan Drug store wine Robowing Chemical/Pharmaceutical/Other Class The methyl ether of the dextrorotatory form of levor-phanol, an opiate analgesic Chemical Formula C18H25NO Chemical Structure ... 

The biological consequences of molecular shape can be dramatic. Look at the structures of dextromethorphan and levomethorphan, for instance. (The Latin prefixes dextro- and levo- mean "right" and "left," respectively.) Dextromethorphan is a common cough suppressant found in many over-the-counter cold medicines, but its mirror-image, levomethorphan, is a powerful narcotic pain-reliever similar in its effects to morphine. The two substances are chemically identical except for their shapes, yet their biological properties are completely different. 

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