# porphyrinogens

> Colorless reduced precursors of porphyrins in which the pyrrole rings are linked by methylene (-CH2-) bridges.

**Wikidata**: [Q49917009](https://www.wikidata.org/wiki/Q49917009)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Porphyrinogen)  
**Source**: https://4ort.xyz/entity/porphyrinogens


## References

1. UMLS 2023