protoporphyrin IX

chemical compound
ChemicalSubstance type_of_chemical_entity Q619815
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protoporphyrin IX

Summary

protoporphyrin IX is a type of chemical entity[1]. It ranks in the top 6% of type_of_chemical_entity entities by monthly Wikipedia readership (241 views/month).[2]

Key Facts

  • protoporphyrin IX's instance of is recorded as type of chemical entity[3].
  • protoporphyrin IX's canonical SMILES is recorded as CC1=C(C2=CC3=C(C(=C(N3)C=C4C(=C(C(=N4)C=C5C(=C(C(=N5)C=C1N2)C)CCC(=O)O)CCC(=O)O)C)C=C)C)C=C[4].
  • protoporphyrin IX's chemical formula is recorded as C₃₄H₃₄N₄O₄[5].
  • protoporphyrin IX is a type of cyclic tetrapyrrole[6].
  • protoporphyrin IX's Commons category is recorded as Protoporphyrin IX[7].
  • protoporphyrin IX comprises carbon[8].
  • protoporphyrin IX's found in taxon is recorded as Common Blackbird[9].
  • protoporphyrin IX's found in taxon is recorded as Homo sapiens[10].
  • protoporphyrin IX's mass is recorded as {'unit': 'Q483261', 'amount': '+562.258006'}[11].
  • protoporphyrin IX's subject has role is recorded as photosensitizer[12].
  • protoporphyrin IX's subject has role is recorded as primary metabolite[13].

Why It Matters

protoporphyrin IX ranks in the top 6% of type_of_chemical_entity entities by monthly Wikipedia readership (241 views/month).[2] It has Wikipedia articles in 13 language editions, a strong signal of global cultural recognition.[14] It is known by 4 alternative names across languages and contexts.[15]

References

Programmatic citations — every numbered marker resolves to a verifiable graph row below.

Direct Wikidata claims

  1. [3] . wikidata.org.
  2. [4] . PubChem. Retrieved . wikidata.org.
  3. [5] . PubChem. Retrieved . wikidata.org.
  4. [6] . wikidata.org.
  5. [7] . wikidata.org.
  6. [8] . wikidata.org.
  7. [9] . Biliverdin IX α, Intermediate and End Product of Tetrapyrolle Biosynthesis. wikidata.org.
  8. [10] . A community-driven global reconstruction of human metabolism.. wikidata.org.
  9. [11] . PubChem. Retrieved . wikidata.org.
  10. [12] . Medical Subject Headings. Retrieved . wikidata.org.
  11. [13] . Reactome. reactome.org. Provenance: wikidata.org.

Class ancestry

  1. [1] . Wikidata. wikidata.org.

Aggregate / graph-position facts

  1. [2] . Wikimedia Foundation. dumps.wikimedia.org.
  2. [14] . Wikidata sitelinks. wikidata.org.
  3. [15] . Wikidata aliases. wikidata.org.

📑 Cite this page

Use these citations when quoting this entity in research, articles, AI prompts, or wherever provenance matters. We aggregate Wikidata + Wikipedia + authoritative open-data sources; the stitched, scored, cross-referenced view is what 4ort.xyz contributes.

APA 4ort.xyz Knowledge Graph. (2026). protoporphyrin IX. Retrieved May 3, 2026, from https://4ort.xyz/entity/protoporphyrin-ix
MLA “protoporphyrin IX.” 4ort.xyz Knowledge Graph, 4ort.xyz, 3 May. 2026, https://4ort.xyz/entity/protoporphyrin-ix.
BibTeX @misc{4ortxyz_protoporphyrin-ix_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{protoporphyrin IX}}, year = {2026}, url = {https://4ort.xyz/entity/protoporphyrin-ix}, note = {Accessed: 2026-05-03}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): protoporphyrin IX — https://4ort.xyz/entity/protoporphyrin-ix (retrieved 2026-05-03)

Canonical URL: https://4ort.xyz/entity/protoporphyrin-ix · Last refreshed:

Edit History

Rolling log of changes to this entity's Wikidata record. Values shown reflect the current state of each edited property — follow the history link to see the precise diff for any edit.

  1. 4d ago · Zyirkon · 2026-05-27 view diff on Wikidata ↗
    Mass {'unit': 'Q483261', 'amount': '+562.258006'}
    Subject has role photosensitizer, primary metabolite
    Found in taxon Common Blackbird, Homo sapiens
    Subclass of
    + 7 other properties edited (see Wikidata diff for full list)
    "/* wbsetclaim-create:2||1 */ [[Property:P117]]: Protoporphyrin IX Structural Formula V1.svg"
Live feed via Wikidata EventStreams. New edits appear within minutes of being made on Wikidata.