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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Reference substances

Reference substances

IUPAC name:
2-methylidenebutanedioic acid

Inventory

EC number:
202-599-6
EC name:
Itaconic acid
CAS number:
97-65-4
CAS number:
97-65-4
Synonyms
Names:
Butanedioic acid, methylene-
Identifier:
IUPAC name
2-methylidenebutanedioic acid
Identifier:
other: InChl
InChI=1S/C5H6O4/c1-3(5(8)9)2-4(6)7/h1-2H2,(H,6,7)(H,8,9)
2-methylenesuccinic acid

Molecular and structural information

Molecular formula:
C5H6O4
Molecular weight:
ca. 130.099
SMILES notation:
OC(=O)CC(=C)C(=O)O
InChl:
InChI=1/C5H6O4/c1-3(5(8)9)2-4(6)7/h1-2H2,(H,6,7)(H,8,9)
Structural formula:
Chemical structure

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