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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Currently viewing:
IUPAC name:
3a,4,7,7a-tetrahydromethyl-4,7-methano-2-benzofuran-1,3-dione

Inventory

EC number:
246-644-8
EC name:
1,2,3,6-tetrahydromethyl-3,6-methanophthalic anhydride
CAS number:
25134-21-8
CAS number:
25134-21-8
Synonyms
Names:
Identifier:
IUPAC name
8-methyl-3a,4,7,7a-tetrahydro-4,7-methano-2-benzofuran-1,3-dione
Identifier:
common name
4,7-methanoisobenzofuran-1,3-dione, 3a,4,7,7a-tetrahydromethyl-
Identifier:
common name
Methyl nadic anhydride
Identifier:
common name
Methyl-1,2,3,6-tetrahydro-3,6-endomethylenephthalic anhydride
Identifier:
common name
Nadic methyl anhydride
Identifier:
common name
methyl-5-norbornene-2,3-dicarboxylic anhydride
Identifier:
other: SMILES notation
CC1C2CC=C1C3C2C(=O)OC3=O
Identifier:
other: InChl
InChI=1/C10H10O3/c1-4-5-2-3-6(4)8-7(5)9(11)13-10(8)12/h2,4,6-8H,3H2,1H3
Identifier:
other: EPA Substance Registry Services (SRS)
Internal Tracking Number: 229963

Molecular and structural information

Molecular formula:
C10H10O3
Molecular weight:
178.185
SMILES notation:
not applicable
InChl:
not applicable
Structural formula:
Chemical structure

Related substances

open allclose all
Identifier:
IUPAC name
Identity:
8-methyl-4-oxatricyclo[5.2.1.0<2,6>]dec-8-ene-3,5-dione
Identifier:
ChemSpider ID
Identity:
CSID:453741
Identifier:
PubChem
Identity:
CID=520186
Identifier:
other: Synonym
Identity:
4-METH
Identifier:
IUPAC name
Identity:
1-Methyl-4-oxatricyclo[5.2.1.0<2,6>]dec-8-ene-3,5-dione
Identifier:
ChemSpider ID
Identity:
CSID:30403
Identifier:
PubChem
Identity:
CID=32802
Identifier:
other: Synonym
Identity:
3-METH
Identifier:
CAS number
Identity:
9087-28-9
Identifier:
CAS number
Identity:
25338-60-7
Identifier:
CAS number
Identity:
415690-66-3
Identifier:
CAS number
Identity:
84135-87-5
Identifier:
CAS number
Identity:
9087-28-9, 25338-60-7, 84135-87-5, 415690-66-3