2-aminopyridine

chemical compound
ChemicalSubstance type_of_chemical_entity Q2393470
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Summary

2-aminopyridine is a type of chemical entity[1]. 2-aminopyridine ranks in the top 6% of type of chemical entity entities by monthly Wikipedia readership (160 views/month).[2]

Key Facts

  • Canonical SMILES: C1=CC=NC(=C1)N[3]
  • Chemical formula: C₄H₅N₃[4]
  • Subclass of: pyridine alkaloid[5]
  • Commons category: 2-Aminopyridine[6]
  • Has characteristic: flammable solid[7]
  • NIOSH Pocket Guide ID: 0026[8]
  • Mass: 95.10[9]
  • Melting point: 58[10], 137[11]
  • Boiling point: 411[12]
  • Vapor pressure: 0.8[13]
  • Flash point: 154[14]
  • Immediately dangerous to life or health: 19.25[15]
  • Solubility: 100[16]
  • Median lethal dose (LD50): 4[17], 25[18], 48[19], 23[20], 29[21], 145[22], 133[23], 200[24], 316[25], 500[26], 70[27]
  • Ionization energy: 8[28]
  • Minimal lethal dose: 200[29], 50[30]
  • Time-weighted average exposure limit: 2[31], 0.5[32]
  • Short-term exposure limit: 1.5[33], 2[34]
  • Subject has role: fluorophore[35]
  • Associated hazard: 2-aminopyridine exposure[36]

Why It Matters

2-aminopyridine has Wikipedia articles in 9 language editions, a strong signal of global cultural recognition.[37] 2-aminopyridine is known by 25 alternative names across languages and contexts.[38]

References

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

Direct Wikidata claims

  1. [3] ↑ . wikidata.org.
  2. [4] ↑ . wikidata.org.
  3. [5] ↑ . wikidata.org.
  4. [6] ↑ . wikidata.org.
  5. [7] ↑ . wikidata.org.
  6. [8] ↑ . wikidata.org.
  7. [9] ↑ . wikidata.org.
  8. [10] ↑ . wikidata.org.
  9. [11] ↑ . wikidata.org.
  10. [12] ↑ . wikidata.org.
  11. [13] ↑ . wikidata.org.
  12. [14] ↑ . wikidata.org.
  13. [15] ↑ . wikidata.org.
  14. [16] ↑ . wikidata.org.
  15. [17] ↑ . wikidata.org.
  16. [18] ↑ . wikidata.org.
  17. [19] ↑ . wikidata.org.
  18. [20] ↑ . wikidata.org.
  19. [21] ↑ . wikidata.org.
  20. [22] ↑ . wikidata.org.
  21. [23] ↑ . wikidata.org.
  22. [24] ↑ . wikidata.org.
  23. [25] ↑ . wikidata.org.
  24. [26] ↑ . wikidata.org.
  25. [27] ↑ . wikidata.org.
  26. [28] ↑ . wikidata.org.
  27. [29] ↑ . wikidata.org.
  28. [30] ↑ . wikidata.org.
  29. [31] ↑ . wikidata.org.
  30. [32] ↑ . wikidata.org.
  31. [33] ↑ . wikidata.org.
  32. [34] ↑ . wikidata.org.
  33. [35] ↑ . wikidata.org.
  34. [36] ↑ . wikidata.org.

Class ancestry

  1. [1] ↑ . Wikidata. wikidata.org.

Aggregate / graph-position facts

  1. [2] ↑ . Wikimedia Foundation. dumps.wikimedia.org.
  2. [37] ↑ . Wikidata sitelinks. wikidata.org.
  3. [38] ↑ . 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). 2-aminopyridine. Retrieved October 16, 2026, from https://4ort.xyz/entity/2-aminopyridine
MLA “2-aminopyridine.” 4ort.xyz Knowledge Graph, 4ort.xyz, 16 Oct. 2026, https://4ort.xyz/entity/2-aminopyridine.
BibTeX @misc{4ortxyz_2-aminopyridine_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{2-aminopyridine}}, year = {2026}, url = {https://4ort.xyz/entity/2-aminopyridine}, note = {Accessed: 2026-10-16}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): 2-aminopyridine — https://4ort.xyz/entity/2-aminopyridine (retrieved 2026-10-16)

Canonical URL: https://4ort.xyz/entity/2-aminopyridine · 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. 21d ago · KrBot bot · 2026-09-26 view diff on Wikidata ↗
    Zvg number → 41050
    "/* wbsetclaimvalue:1| */ Zvg number: 41050, см. / see [[Template:Autofix|autofix]] на / on [[Property talk:P679]]"
  2. 24d ago · Mrwdat3 · 2026-09-23 view diff on Wikidata ↗
    Zvg number → 41050
    "/* wbcreateclaim-create:1| */ Zvg number: 041050, [[:toollabs:quickstatements/#/batch/275042|batch #275042]]"
  3. 23w ago · Shuaib-bot bot · 2026-05-02 view diff on Wikidata ↗
    Instance of → —
    Time-weighted average exposure limit → {'amount': '+2'}, {'amount': '+0.5'}
    Melting point → {'amount': '+58'}, {'amount': '+137'}
    Subclass of → pyridine alkaloid
    + 16 other properties edited (see Wikidata diff for full list)
    "/* wbeditentity-update-languages-and-other-short:0||ur */"
Live feed via Wikidata EventStreams. New edits appear within minutes of being made on Wikidata.