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Periodic Table/Compounds/Itaconic acid

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© Melvin Olsson 2025–2026
Data: IAEA & PubChem

Itaconic acid

C₅H₆O₄·130.100 g/mol·CID 811

IUPAC: 2-methylidenebutanedioic acid

Also known as: 97-65-4, 2-Methylenesuccinic acid, 2-methylidenebutanedioic acid, METHYLENESUCCINIC ACID, Methylenebutanedioic acid (+14 more)

2D structure of Itaconic acid

Molecular Structure

Molecular Propertiesmass · H-bonds · stereo

Molecular Weight

130.100g/mol

Exact Mass

130.026609Da

Monoisotopic Mass

130.026609Da

XLogP

-0.1

Polar Surface Area

74.6Ų

Complexity

158

Formal Charge

0

H-Bond Donors

2

H-Bond Acceptors

4

Rotatable Bonds

3

Heavy Atoms

9

Stereo Centers

0

Bond Stereo

0

Drug-Likeness (Lipinski's Rule of Five)

✓ 130.1 g/mol
MW ≤ 500
✓ -0.1
LogP ≤ 5
✓ 2
H-bond donors ≤ 5
✓ 4
H-bond acceptors ≤ 10

Passes all rules — good oral bioavailability predicted

GHS Hazard Classification

Danger
Corrosive
Corrosive
Irritant
Irritant
Hazards
  • H315Causes skin irritation
  • H318Causes serious eye damage
  • H319Causes serious eye irritation
  • H335May cause respiratory irritation
  • H402Harmful to aquatic life

Source: PubChem GHS Classification. Always consult the SDS for handling.

Chemical IdentifiersSMILES · InChI

InChI

InChI=1S/C5H6O4/c1-3(5(8)9)2-4(6)7/h1-2H2,(H,6,7)(H,8,9)

Isomers8 compounds with formula C₅H₆O₄

2D structure of (E)-4-methoxy-4-oxobut-2-enoic acid

(E)-4-methoxy-4-oxobut-2-enoic acid

CID 5369209 · 130.1 g/mol

2D structure of (E)-pent-2-enedioic acid

(E)-pent-2-enedioic acid

CID 5280498 · 130.1 g/mol

2D structure of (Z)-4-methoxy-4-oxobut-2-enoic acid

(Z)-4-methoxy-4-oxobut-2-enoic acid

CID 5354456 · 130.1 g/mol

2D structure of (E)-2-methylbut-2-enedioic acid

(E)-2-methylbut-2-enedioic acid

CID 638129 · 130.1 g/mol

2D structure of (Z)-2-methylbut-2-enedioic acid

(Z)-2-methylbut-2-enedioic acid

CID 643798 · 130.1 g/mol

2D structure of cis-(1R,2S)-cyclopropane-1,2-dicarboxylic acid

cis-(1R,2S)-cyclopropane-1,2-dicarboxylic acid

CID 726455 · 130.1 g/mol

2D structure of pent-2-enedioic acid

pent-2-enedioic acid

CID 74406 · 130.1 g/mol

2D structure of cyclopropane-1,1-dicarboxylic acid

cyclopropane-1,1-dicarboxylic acid

CID 69017 · 130.1 g/mol

External Resources

PubChem ↗Wikipedia ↗