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isophthalic acid

chemical compound
Class type of: benzenedicarboxylic acid Q415253

Facts

8 properties
Instance of
type of chemical entity
Subclass of
benzenedicarboxylic acid[4]
Canonical SMILES
C1=CC(=CC(=C1)C(=O)O)C(=O)O[2]
Chemical formula
C₈H₆O₄[3]
Has part(s)
oxygen, carbon[5][6]
Ionization energy
+9.98[9]
Mass
+166.027[7]
Melting point
+347[8]
🏷️ Also known as
en isophthalic acid en m-benzenedicarboxylic acid en meta-benzenedicarboxylic acid en IPA ar حمض الإيزوفثاليك cs kyselina isoftalová de Meta-Phthalsäure de M-Phthalsäure de 1,3-Benzoldicarbonsäure de Isophthalsäure el Μετα-φθαλικό οξύ el Βενζολο-1,3-δικαρβοξυλικό οξύ el Ισοφθαλικό οξύ es Acido isoftalico es Ácido isoftálico fa ایزو فتالیک اسید fi Meta-ftaalihappo fi 1,3-bentseenidikarboksyylihappo fi isoftaalihappo fi M-ftaalihappo
🔖 Identifiers · 35
GND ID
4411627-5
OpenAlex ID
C2779271837
CAMEO Chemicals ID
8759
CAS Registry Number
121-91-5
CCDC Number
1108747
CSD Refcode
BENZDC01
ChEBI ID
30802
ChEMBL ID
CHEMBL1871181
ChemSpider ID
8182
CosIng number
95288
DSSTOX compound identifier
DTXCID301485
DSSTox substance ID
DTXSID3021485
Show all 35 identifiers +23
EC number
204-506-4
ECHA Substance Infocard ID
100.004.098
Elhuyar ZTH ID
025946
Encyclopædia Britannica Online ID
science/isophthalic-acid
Freebase ID
/m/05f0fp
Gmelin number
27618
HSDB ID
2090
ICSC ID
0500
InChI
InChI=1S/C8H6O4/c9-7(10)5-2-1-3-6(4-5)8(11)12/h1-4H,(H,9,10)(H,11,12)
InChIKey
QQVIHTHCMHWDBS-UHFFFAOYSA-N
MassBank accession ID
MSBNK-Fac_Eng_Univ_Tokyo-JP010465, MSBNK-Osaka_Univ-OUF00125
Microsoft Academic ID (discontinued)
2779271837
NMRShiftDB structure ID
20096828
NSC number
15310
PDB ligand ID
8G0
PubChem CID
8496, 23461093
Reaxys registry number
1909332
Römpp online ID
RD-09-01681
SPLASH
splash10-0f6t-1980000000-1de0f162e8aa1d67e0a9
SureChEMBL ID
22462
UM-BBD compound ID
c1274
UNII
X35216H9FJ
ZVG number
37130

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🔗 Connections
Has part(s) 2
oxygen, carbon
Subclass of 1
benzenedicarboxylic acid
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Summary

isophthalic acid is a type of chemical entity[1].

References

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

Direct Wikidata claims

  1. [2] ↑ . wikidata.org.
  2. [3] ↑ . wikidata.org.
  3. [4] ↑ . wikidata.org.
  4. [5] ↑ . wikidata.org.
  5. [6] ↑ . wikidata.org.
  6. [7] ↑ . wikidata.org.
  7. [8] ↑ . wikidata.org.
  8. [9] ↑ . wikidata.org.

Class ancestry

  1. [1] ↑ . Wikidata. 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). isophthalic acid. Retrieved November 11, 2026, from https://4ort.xyz/entity/isophthalic-acid
MLA “isophthalic acid.” 4ort.xyz Knowledge Graph, 4ort.xyz, 11 Nov. 2026, https://4ort.xyz/entity/isophthalic-acid.
BibTeX @misc{4ortxyz_isophthalic-acid_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{isophthalic acid}}, year = {2026}, url = {https://4ort.xyz/entity/isophthalic-acid}, note = {Accessed: 2026-11-11}}
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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. 6w ago · KrBot bot · 2026-09-26 view diff on Wikidata ↗
    ZVG number → 37130
    "Changed claim: ZVG number: 37130, см. / see autofix на / on P679"
  2. 7w ago · Mrwdat3 · 2026-09-23 view diff on Wikidata ↗
    ZVG number → 37130
    "Created claim: ZVG number: 037130, batch #275042"
  3. 20w ago · Nabbegat · 2026-06-19 view diff on Wikidata ↗
    Instance of → type of chemical entity
    Ionization energy → 9.98
    Subclass of → benzenedicarboxylic acid
    Melting point → 347
    + 2 other properties edited (see Wikidata diff for full list)
    "Changed [tr] labels, descriptions or aliases: QuickStatements 3.0 batch #37300"
Live feed via Wikidata EventStreams. New edits appear within minutes of being made on Wikidata.