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| Formula | C22H29NO2 | 
| Molar mass | 339.479 g·mol−1 | 
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N-Benzyl-N-desmethyltramadol is an opioid analgesic drug related to tramadol which has been sold as a designer drug. It is commonly sold as the deuterated derivative RBTd3, though the non-deuterated parent compound has similar activity. [1]