5,6-Dihydro-4H-cyclopenta[c]furan-1,3-dione

BGC Id:	345388119521
CAS No:	3205-94-5
Synonyms:	5,6-dihydro-4h-cyclopenta[c]furan-1,3-quinone ; 1-cyclopentene-1,2-dicarboxylic anhydride 96% ; nsc 291644 ; cyclopentene-1,2-dicarboxylic acid anhydride ; 5,6-dihydro-4h-cyclopenta[c]furan-1,3-dione ; 1-cyclopentene-1,2-dicarboxylic anhydride ; 5,6-dihydro-1h-cyclopenta[c]furan-1,3(4h)-dione ; 4,5,6,6a-tetrahydro-1h-cyclopenta[c]furan-1,3(3ah)-dione ; cyclopentane-1,2-dicarboxylic anhydride
Molecular Formula:	C7H6O3
Molecular Weight:	138.12
EINECS:

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The last intensive check and update was carried out on 2025/11/26.

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Synonyms:

5,6-dihydro-4h-cyclopenta[c]furan-1,3-quinone ; 1-cyclopentene-1,2-dicarboxylic anhydride 96% ; nsc 291644 ; cyclopentene-1,2-dicarboxylic acid anhydride ; 5,6-dihydro-4h-cyclopenta[c]furan-1,3-dione ; 1-cyclopentene-1,2-dicarboxylic anhydride ; 5,6-dihydro-1h-cyclopenta[c]furan-1,3(4h)-dione ; 4,5,6,6a-tetrahydro-1h-cyclopenta[c]furan-1,3(3ah)-dione ; cyclopentane-1,2-dicarboxylic anhydride

CAS:

3205-94-5

EINECS:

Molecular Formula:

C7H6O3

MDL:

Properties

Molecular Weight:

138.12 g·mol−1

Melting point:

42-45 °C(lit.)

Boiling point:

133-135 °C10 mm Hg(lit.)

Flash point:

>230 ºF

Safety Information

Hazard Symbols: Xi

Europe standard Hazard pictograms, code and definition

Hazard Classes:

Risk Codes:

36/37/38 (R)

Safety Codes:

26-36 (S)

WGK Germany:

What other providers are available for CAS 3205-94-5?

In addition to the providers presented here for 5,6-Dihydro-4H-cyclopenta[c]furan-1,3-dione with the CAS number 3205-94-5, there are other 9 providers with slightly different product names available for this CAS number.

1-Cyclopentene-1,2-dicarboxylic anhydride

Dayang Chem (Hangzhou) Co.,Ltd. | Leap Chem Co., Ltd | BIOZOL Diagnostica Vertrieb GmbH +3 additional providers that we know from the past

Cyclopentene-1,2-dicarboxylic acid anhydride

+3 additional providers that we know from the past