| C07D489/00 | Heterocyclic compounds containing 4aH-8, 9 c- Iminoethano-phenanthro [4, 5-b, c, d] furan ring systems, e.g. derivatives of [4, 5-epoxy]-morphinan of the formula: [figure] [2] |
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Note(s) The numbering may be different according to the RING INDEX and given by the formula: [figure]. —[5] |
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