# Retronecine

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**Retronecine** is a [pyrrolizidine alkaloid](/source/Pyrrolizidine_alkaloid) found in a variety of plants in the genera *[Senecio](/source/Senecio)* and *[Crotalaria](/source/Crotalaria)*, and the family [Boraginaceae](/source/Boraginaceae). It is the most common central core for other pyrrolizidine alkaloids.[1]

## See also

- [Heliotridine](/source/Heliotridine), the [enantiomer](/source/Enantiomer) of retronecine

## References

1. Retronecine, *[Merck Index](/source/Merck_Index)*, 12th Edition, **8334**

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Adapted from the Wikipedia article [Retronecine](https://en.wikipedia.org/wiki/Retronecine) by Wikipedia contributors ([contributor history](https://en.wikipedia.org/wiki/Retronecine?action=history)). Available under [Creative Commons Attribution-ShareAlike 4.0 International](https://creativecommons.org/licenses/by-sa/4.0/). Changes may have been made.