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style="background: #F8EABA; text-align: center;" colspan="2" | Identifiers
CAS number 2338-37-6
PubChem 200742
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style="background: #F8EABA; text-align: center;" colspan="2" | Properties
Molecular formula C22H29NO2
Molar mass 339.47 g mol−1
Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa)
Infobox references

Levopropoxyphene is an antitussive. It is an optical isomer of dextropropoxyphene. The racemic mixture is called propoxyphene. Only the dextro-isomer (dextropropoxyphene) has an analgesic effect; the levo-isomer appears to exert only an antitussive effect. It was formerly marketed in the U.S. by Eli Lilly under the tradename Novrad as an antitussive.