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CA19-9

tumor marker
ChemicalSubstance group_of_stereoisomers Q182517
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CA19-9

Summary

CA19-9 is a group of stereoisomers[1]. CA19-9 draws 86 Wikipedia views per month (group_of_stereoisomers category, ranking #175 of 1,063).[2]

Key Facts

  • CA19-9's instance of is recorded as group of stereoisomers[3].
  • CA19-9's canonical SMILES is recorded as CC1C(C(C(C(O1)OC2C(OC(C(C2OC3C(C(C(C(O3)CO)O)OC4(CC(C(C(O4)C(C(CO)O)O)NC(=O)C)O)C(=O)O)O)NC(=O)C)O)CO)O)O)O[4].
  • CA19-9's InChI is recorded as InChI=1S/C31H52N2O23/c1-8-17(41)20(44)21(45)28(50-8)53-23-14(7-36)51-27(47)16(33-10(3)38)25(23)54-29-22(46)26(19(43)13(6-35)52-29)56-31(30(48)49)4-11(39)15(32-9(2)37)24(55-31)18(42)12(40)5-34/h8,11-29,34-36,39-47H,4-7H2,1-3H3,(H,32,37)(H,33,38)(H,48,49)/t8-,11-,12+,13+,14+,15+,16+,17+,18+,19-,20+,21-,22+,23+,24+,25+,26-,27?,28-,29-,31-/m0/s1[5].
  • CA19-9's InChIKey is recorded as XBSNXOHQOTUENA-KRAHZTDDSA-N[6].
  • CA19-9's chemical formula is recorded as C₃₁H₅₂N₂O₂₃[7].
  • CA19-9's subclass of is recorded as chemical compound[8].
  • CA19-9's MeSH descriptor ID is recorded as D018395[9].
  • CA19-9's Freebase ID is recorded as /m/02qxrd7[10].
  • CA19-9's ChemSpider ID is recorded as 9160877[11].
  • CA19-9's PubChem CID is recorded as 10985677[12].
  • CA19-9's MeSH tree code is recorded as D23.050.285.050.119[13].
  • CA19-9's MeSH tree code is recorded as D23.050.301.290.544.119[14].
  • CA19-9's MeSH tree code is recorded as D23.050.550.325.119[15].
  • CA19-9's MeSH tree code is recorded as D23.050.705.230.544.119[16].
  • CA19-9's MeSH tree code is recorded as D23.101.140.075.119[17].
  • CA19-9's ChEBI ID is recorded as 61793[18].
  • CA19-9's Encyclopædia Britannica Online ID is recorded as science/CA-19-9[19].
  • CA19-9's isomeric SMILES is recorded as C[C@H]1C@HOC@@HO[C@@H]2[C@H](OC([C@@H]([C@H]2O[C@H]3[C@@H](C@HO[C@@]4(C[C@@H](C@HNC(=O)C">[20].
  • CA19-9's mass is recorded as {'unit': 'Q483261', 'amount': '+820.296'}[21].
  • CA19-9's subject has role is recorded as tumor markers[22].
  • CA19-9's SureChEMBL ID is recorded as 29372449[23].
  • CA19-9's UMLS CUI is recorded as C0006613[24].
  • CA19-9's IEDB Epitope ID is recorded as 142353[25].
  • CA19-9's Microsoft Academic ID is recorded as 144369459[26].
  • CA19-9's Microsoft Academic ID is recorded as 2776614667[27].

Why It Matters

CA19-9 draws 86 Wikipedia views per month (group_of_stereoisomers category, ranking #175 of 1,063).[2] CA19-9 has Wikipedia articles in 15 language editions, a strong signal of global cultural recognition.[28] CA19-9 is known by 17 alternative names across languages and contexts.[29]

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] ↑ . PubChem. Retrieved . wikidata.org.
  5. [7] ↑ . PubChem. Retrieved . wikidata.org.
  6. [8] ↑ . wikidata.org.
  7. [9] ↑ . wikidata.org.
  8. [10] ↑ . Freebase Data Dumps. wikidata.org.
  9. [11] ↑ . Q2311683. Retrieved . wikidata.org.
  10. [12] ↑ . PubChem. Retrieved . wikidata.org.
  11. [13] ↑ . wikidata.org.
  12. [14] ↑ . wikidata.org.
  13. [15] ↑ . wikidata.org.
  14. [16] ↑ . wikidata.org.
  15. [17] ↑ . wikidata.org.
  16. [18] ↑ . ChEBI. Retrieved . wikidata.org.
  17. [19] ↑ . wikidata.org.
  18. [20] ↑ . PubChem. Retrieved . wikidata.org.
  19. [21] ↑ . PubChem. Retrieved . wikidata.org.
  20. [22] ↑ . wikidata.org.
  21. [23] ↑ . wikidata.org.
  22. [24] ↑ . UMLS 2023. Retrieved . wikidata.org.
  23. [25] ↑ . Immune Epitope Database and Analysis Resource. Retrieved . wikidata.org.
  24. [26] ↑ . wikidata.org.
  25. [27] ↑ . wikidata.org.

Class ancestry

  1. [1] ↑ . Wikidata. wikidata.org.

Aggregate / graph-position facts

  1. [2] ↑ . Wikimedia Foundation. dumps.wikimedia.org.
  2. [28] ↑ . Wikidata sitelinks. wikidata.org.
  3. [29] ↑ . 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). CA19-9. Retrieved May 3, 2026, from https://4ort.xyz/entity/ca19-9
MLA “CA19-9.” 4ort.xyz Knowledge Graph, 4ort.xyz, 3 May. 2026, https://4ort.xyz/entity/ca19-9.
BibTeX @misc{4ortxyz_ca19-9_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{CA19-9}}, year = {2026}, url = {https://4ort.xyz/entity/ca19-9}, note = {Accessed: 2026-05-03}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): CA19-9 — https://4ort.xyz/entity/ca19-9 (retrieved 2026-05-03)

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