Caronic anhydride

Product Name: Caronic anhydride
CAS No.: 67911-21-1
Chemical Name: Caronic anhydride
Synonyms: 6,6-Dimethyl-3-oxabicyclo[3.1.0]hexane-2,4-dione;aronicanhydride;caronic anhydride;Calderon anhydride;Vanillin Impurity 4;Caronic Anhydride >WIDELY Caronic anhydride;Caronic anhydride(Cas number:67911-21-1);6,6-Dimethyl-3-oxabicyclo[3.1.]hexane-2,4-dione;6,6-Dimethyl-3-oxa-bicyclo[3.1.0]hexan-2,4-dione
CBNumber: CB3855588
Molecular Formula: C7H8O3
Formula Weight: 140.14
MOL File: 67911-21-1.mol

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Caronic anhydride Property

Melting point:: 53-57℃
Boiling point:: 246°C
Density: 1.274
Flash point:: 113°C
storage temp.: under inert gas (nitrogen or Argon) at 2-8°C
solubility: soluble in Methanol
form: Solid
color: White
Sensitive: Moisture Sensitive
InChI: InChI=1S/C7H8O3/c1-7(2)3-4(7)6(9)10-5(3)8/h3-4H,1-2H3
InChIKey: QKAHKEDLPBJLFD-UHFFFAOYSA-N
SMILES: C12C(C1(C)C)C(=O)OC2=O
CAS DataBase Reference: 67911-21-1(CAS DataBase Reference)

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Safety

HazardClass: IRRITANT
HS Code: 2914199090

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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.

P264Wash hands thoroughly after handling.

P264Wash skin thouroughly after handling.

P280Wear protective gloves/protective clothing/eye protection/face protection.

P304+P340IF INHALED: Remove victim to fresh air and Keep at rest in a position comfortable for breathing.

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

P405Store locked up.

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N-Bromosuccinimide Price

TCI Chemical

Product number: C2596
Product name: Caronic Anhydride
Purity: >98.0%(GC)(T)
Packaging: 1g
Price: $102
Updated: 2025/07/31

TCI Chemical

Product number: C2596
Product name: Caronic Anhydride
Purity: >98.0%(GC)(T)
Packaging: 5g
Price: $368
Updated: 2025/07/31

TRC

Product number: C184263
Product name: Caronic Anhydride
Packaging: 500mg
Price: $65
Updated: 2021/12/16

TRC

Product number: C184263
Product name: Caronic Anhydride
Packaging: 100mg
Price: $45
Updated: 2021/12/16

Biosynth Carbosynth

Product number: FC75910
Product name: Caronic Anhydride
Packaging: 10g
Price: $57.6
Updated: 2021/12/16

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Caronic anhydride Chemical Properties,Usage,Production

Chemical Properties

White crystalline powder

Uses

Caronic anhydride, also known as 6,6-Dimethyl-3-oxabicyclo[3.1.0]hexane-2,4-dione, is a pharmaceutical intermediate mainly used as a synthesis of Boceprevir, an oral protease inhibitor of hepatitis C. It is widely used in agricultural chemicals and other organic synthesis field.

Synthesis

Step 1: Ethyl dichlorochrysanthemate in ethyl acetate is ozonized at -5??C until conversion exceeds 99%. Work-up, saponification, acidification, extraction, and concentration yield 3,3-dimethyl-1,2-cyclopropanedicarboxylic acid.
Step 2: The diacid is heated with acetic anhydride and sodium acetate at 170??C to form the anhydride via dehydration. Work-up and recrystallization from toluene/petroleum ether give 6,6-dimethyl-3-oxabicyclo[3.1.0]hexane-2,4-dione (Caronic anhydride).

Caronic anhydride Preparation Products And Raw materials

Raw materials

Preparation Products

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Caronic anhydride Suppliers

Americas 1 Belgium 1 China 325 Europe 2 Germany 3 India 12 Italy 1 Japan 2 South Africa 1 United Kingdom 4 United States 22 Global 374

ABACHEM

Tel: 13816002712
Fax: 021-51159188
Email: liu_wj@abachem.com
Country: China
ProdList: 45
Advantage: 58

Hunan HuaTeng Pharmaceutical Co., Ltd.,

Tel: 400-8592883
Fax: 0731-82251112
Email: sales@huatengsci.com
Country: China
ProdList: 5873
Advantage: 58

HUNEI MEIBEI NEW MATERIAL Co., Ltd.

Tel: 18271819653
Email: 1483755123@qq.com
Country: China
ProdList: 4820
Advantage: 58

Shanghai Boyle Chemical Co., Ltd.

Tel: 021-50182298 021-50180596
Fax: +86-21-57758967
Email: sales@boylechem.com
Country: China
ProdList: 2208
Advantage: 55

J & K SCIENTIFIC LTD.

Tel: 18210857532; 18210857532
Fax: 86-10-82849933
Email: jkinfo@jkchemical.com
Country: China
ProdList: 96815
Advantage: 76

Chembest Research Laboratories Limited

Tel: +86-21-20908456
Fax: 021-58180499
Email: sales@BioChemBest.com
Country: China
ProdList: 6003
Advantage: 61

TCI (Shanghai) Development Co., Ltd.

Tel: 021-67121386
Fax: 021-67121385
Email: Sales-CN@TCIchemicals.com
Country: China
ProdList: 24529
Advantage: 81

Beijing HwrkChemical Technology Co., Ltd

Tel: 010-89508211 18501085097
Fax: 010-89508210
Email: sales.bj@hwrkchemical.com
Country: China
ProdList: 9401
Advantage: 55

Energy Chemical

Tel: 021-021-58432009 400-005-6266
Fax: 021-58436166
Email: sales8178@energy-chemical.com
Country: China
ProdList: 44801
Advantage: 61

Beijing Ouhe Technology Co., Ltd

Tel: 010-010-82967028 13522913783
Fax: +86-10-82967029
Email: 2355560935@qq.com
Country: China
ProdList: 11997
Advantage: 60

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View Lastest Price from Caronic anhydride manufacturers

ZHENGZHOU JIUYI TIME NEW MATERIALS CO,.LTD

Product: 6,6-Dimethyl-3-oxabicyclo[3.1.0]hexane-2,4-dione 67911-21-1
Price: US $2.00-5.00/kg
Min. Order: 1kg
Purity: 99%
Supply Ability: 100kg
Release date: 2025-07-18

Hebei Chuanghai Biotechnology Co., Ltd

Product: Caronic anhydride 67911-21-1
Price: US $0.00-0.00/KG
Min. Order: 1KG
Purity: 99%
Supply Ability: 10 mt
Release date: 2024-12-09

Henan Aochuang Chemical Co.,Ltd.

Product: Caronic anhydride 67911-21-1
Price: US $0.00-0.00/kg
Min. Order: 1kg
Purity: 98%
Supply Ability: 1Ton
Release date: 2022-10-18

67911-21-1, Caronic anhydrideRelated Search:

Maleic anhydride 3,3 DIMETHYL CIS 1,2 CYCLOPROPANE DICARBOXYLIC ACID Carbidopa Monohydrate ACETONE-D6 Acetoin Triethyl phosphate Dimethyl fumarate Dimethyl sulfoxide N,N-Dimethylformamide Isatoic Anhydride Hexane ETHANE Erythromycin Estolate Dimethyl ether Dimethyl carbonate Dimethyl sulfate Phthalic anhydride Acetic anhydride

6,6-Dimethyl-3-oxabicyclo[3.1.0]hexane-2,4-dione

caronic anhydride

6,6-Dimethyl-3-oxabicyclo[3.1.0]hexane-2,4-dione caronic anhydride aronicanhydride

aronicanhydride

3-Oxabicyclo[3.1.0]hexane-2,4-dione,6,6-diMethyl-

6,6-Dimethyl-3-oxabicyclo[3.1.0]hexane-2,4-dione (Caronic anhydride)

6,6-dimethyl-3-oxabicyclo[3.1.0]hexane-2,4-quinone

6,6-Dimethyl-3-oxabicyclo[3.1.]hexane-2,4-dione

Caronic anhydride(Cas number:67911-21-1)

Caronic Anhydride &gt

3,3-Dimethyl-1,2-cyclopropanedicarboxylic Anhydride

WIDELY Caronic anhydride

Calderon anhydride

Vanillin Impurity 4

(1R,5S)-6,6-Dimethyl-3-oxabicyclo[3.1.0]hexane-2,4-dione

6,6-Dimethyl-3-oxa-bicyclo[3.1.0]hexan-2,4-dione

67911-21-1

API

1

3

67911-21-1