ChemicalBook > CAS DataBase List > 1-CYCLOPENTENE-1,2-DICARBOXYLIC ANHYDRIDE

1-CYCLOPENTENE-1,2-DICARBOXYLIC ANHYDRIDE

Product Name
1-CYCLOPENTENE-1,2-DICARBOXYLIC ANHYDRIDE
CAS No.
3205-94-5
Chemical Name
1-CYCLOPENTENE-1,2-DICARBOXYLIC ANHYDRIDE
Synonyms
5,6-Dihydro-1H-cyclopenta[c]furan-1,3(4H)-dione;Cyclopentane-1,2-dicarboxylic anhydride;NSC 291644;1-CYCLOPENTENE-1,2-DICARBOXYLIC ANHYDRIDE;5,6-dihydro-4H-cyclopenta[c]furan-1,3-dione;1H,3H,4H,5H,6H-Cyclopenta[c]furan-1,3-dione;Cyclopentene-1,2-dicarboxylic acid anhydride;5,6-dihydro-4H-cyclopenta[c]furan-1,3-quinone;1-Cyclopentene-1,2-dicarboxylic anhydride 96%;1H-Cyclopenta[c]furan-1,3(4H)-dione, 5,6-dihydro-
CBNumber
CB2204873
Molecular Formula
C7H6O3
Formula Weight
138.12
MOL File
3205-94-5.mol
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1-CYCLOPENTENE-1,2-DICARBOXYLIC ANHYDRIDE Property

Melting point:
42-45 °C (lit.)
Boiling point:
133-135 °C/10 mmHg (lit.)
Density 
1.2667 (rough estimate)
refractive index 
n20/D 1.4978(lit.)
Flash point:
>230 °F
storage temp. 
under inert gas (nitrogen or Argon) at 2-8°C
BRN 
123650
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Safety

Hazard Codes 
Xi
Risk Statements 
36/37/38
Safety Statements 
26-36
WGK Germany 
3
21
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Hazard and Precautionary Statements (GHS)

Symbol(GHS)
Signal word
Warning
Hazard statements

H315Causes skin irritation

H319Causes serious eye irritation

H335May cause respiratory irritation

Precautionary statements

P261Avoid breathing dust/fume/gas/mist/vapours/spray.

P305+P351+P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.

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N-Bromosuccinimide Price

Biosynth Carbosynth
Product number
FD138322
Product name
5,6-Dihydro-1H-cyclopenta[c]furan-1,3(4H)-dione
Packaging
50mg
Price
$200
Updated
2021/12/16
Biosynth Carbosynth
Product number
FD138322
Product name
5,6-Dihydro-1H-cyclopenta[c]furan-1,3(4H)-dione
Packaging
100mg
Price
$250
Updated
2021/12/16
Biosynth Carbosynth
Product number
FD138322
Product name
5,6-Dihydro-1H-cyclopenta[c]furan-1,3(4H)-dione
Packaging
250mg
Price
$300
Updated
2021/12/16
AK Scientific
Product number
0617AQ
Product name
1-Cyclopentene-1,2-dicarboxylic anhydride
Packaging
1g
Price
$393
Updated
2021/12/16
Biosynth Carbosynth
Product number
FD138322
Product name
5,6-Dihydro-1H-cyclopenta[c]furan-1,3(4H)-dione
Packaging
500mg
Price
$400
Updated
2021/12/16
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1-CYCLOPENTENE-1,2-DICARBOXYLIC ANHYDRIDE Chemical Properties,Usage,Production

Uses

Valuable Diels-Alder dienophile, for example, in approach to the bicycloundecane system in taxanes.

Purification Methods

If IR has OH peaks, then some hydrolysis to the diacid (m 178o) must have occurred. In this case reflux it with an appropriate volume of Ac2O for 30minutes, evaporate the Ac2O and distil it in vacuo. The distillate solidifies and can be recrystallised from EtOAc/hexane (1:1). The diacid distils without decomposition due to formation of the anhydride. The dimethyl ester has m 120-125o/11mm. [Askain Chem Ber 98 2322 1965, Beilstein 17/11 V 125.]

1-CYCLOPENTENE-1,2-DICARBOXYLIC ANHYDRIDE Preparation Products And Raw materials

Raw materials

Preparation Products

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1-CYCLOPENTENE-1,2-DICARBOXYLIC ANHYDRIDE Suppliers

Energy Chemical
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021-021-58432009 400-005-6266
Fax
021-58436166
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sales8178@energy-chemical.com
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China
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Shanghai Hanhong Scientific Co.,Ltd.
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021-54306202 13764082696
Email
info@hanhongsci.com
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China
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42958
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64
Syntechem Co.,Ltd
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Fax
E-Mail Inquiry
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info@syntechem.com
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China
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Letopharm Limited
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+86-21-5821 5861
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+86-21-5106 2861
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sales@letopharm.com
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China
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ShangHai Caerulum Pharma Discovery Co., Ltd.
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18149758185 18149758185
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sales-cpd@caerulumpharma.com
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China
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Shanghai HuanChuan Industry Co.,Ltd.
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021-61478794
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021-61478794
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sales@hcshhai.com
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China
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Cool Pharm, Ltd
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021-60455363 18019463053
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50966098
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sales@coolpharm.com
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China
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Sigma-Aldrich
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021-61415566 800-8193336
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orderCN@merckgroup.com
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China
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Alfa Chemistry
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1-516-6625404
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1-516-927-0118
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support@alfa-chemistry.com
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United States
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Amadis Chemical Company Limited
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571-89925085
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0086-571-89925065
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sales@amadischem.com
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China
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View Lastest Price from 1-CYCLOPENTENE-1,2-DICARBOXYLIC ANHYDRIDE manufacturers

Hebei Weibang Biotechnology Co., Ltd
Product
1-CYCLOPENTENE-1,2-DICARBOXYLIC ANHYDRIDE 3205-94-5
Price
US $10.00/kg
Min. Order
1kg
Purity
99%
Supply Ability
100 mt
Release date
2024-11-19
Hebei Mojin Biotechnology Co., Ltd
Product
1-CYCLOPENTENE-1,2-DICARBOXYLIC ANHYDRIDE 3205-94-5
Price
US $100.00/KG
Min. Order
1KG
Purity
99%
Supply Ability
5000KG
Release date
2023-08-24
Zhuozhou Wenxi import and Export Co., Ltd
Product
1-Cyclopentene-1,2-dicarboxylic anhydride 3205-94-5
Price
US $15.00-10.00/KG
Min. Order
1KG
Purity
99%+ HPLC
Supply Ability
Monthly supply of 1 ton
Release date
2021-06-27

3205-94-5, 1-CYCLOPENTENE-1,2-DICARBOXYLIC ANHYDRIDERelated Search:


  • 1-CYCLOPENTENE-1,2-DICARBOXYLIC ANHYDRIDE
  • 5,6-Dihydro-1H-cyclopenta[c]furan-1,3(4H)-dione
  • Cyclopentene-1,2-dicarboxylic acid anhydride
  • 4,5,6,6a-Tetrahydro-1H-cyclopenta[c]furan-1,3(3aH)-dione
  • Cyclopentane-1,2-dicarboxylic anhydride
  • 5,6-dihydro-4H-cyclopenta[c]furan-1,3-dione
  • 5,6-dihydro-4H-cyclopenta[c]furan-1,3-quinone
  • NSC 291644
  • 1-Cyclopentene-1,2-dicarboxylic anhydride 96%
  • 1H-Cyclopenta[c]furan-1,3(4H)-dione, 5,6-dihydro-
  • 1-CYCLOPENTENE-1,2-DICARBOXYLIC ANHYDRIDE ISO 9001:2015 REACH
  • 1H,3H,4H,5H,6H-Cyclopenta[c]furan-1,3-dione
  • 3205-94-5
  • Carboxylic Acid Anhydrides
  • Carbonyl Compounds
  • Building Blocks
  • Organic Building Blocks
  • Carbonyl Compounds
  • Carboxylic Acid Anhydrides
  • Organic Building Blocks
  • Building Blocks
  • Carbonyl Compounds
  • Carboxylic Acid Anhydrides
  • Chemical Synthesis
  • Organic Building Blocks