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Alfa Aesar™ 3,4-Dimethoxy-3-cyclobutene-1,2-dione, 98%

$240.12 - $240.12

Chemical Identifiers

CAS 5222-73-1
Molecular Formula C6H6O4
Formula Weight 142.1
MDL Number MFCD00101316
Synonym Dimethyl squarate; Squaric acid dimethyl ester
Chemical Name or Material 3,4-Dimethoxy-3-cyclobutene-1,2-dione
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Products ${productFamilyLength}
Catalog Number Mfr. No. Quantity Price Quantity  
Catalog Number Mfr. No. Quantity Price Quantity  
AAA1818606 SDS Alfa Aesar™
A1818606
5g Each for $240.12
AAA1818603 SDS Alfa Aesar™
A1818603
1g N/A N/A  
Please call Customer Service at 1-800-234-7437 or send an email to help@thermofisher.com for assistance.
Specifications

Description

Applications
3,4-Dimethoxy-3-cyclobutene-1,2-dione (Dimethyl squarate) finds it uses in the synthesis of chiral squaramides, highly enantioselective catalyst for the Friedel-Crafts reactions of indoles, 3-(hydroxyamino)-4-methoxy-3-cyclobutene-1,2-dione, squarate derivatives of the O-SP-core antigens, methyl squarate derivative of the Ogawa O-SP-core antigen, o-quinodimethanes, benzocyclobutenes, quinones. It is employed as a starting material in the preparation of o-quinodimethanes, benzocyclobutenes, and quinones.

Solubility
Very soluble in water.

Notes
Store away from oxidizing agents. Keep the container tightly closed and place it in a cool, dry and well ventilated condition.
Description & Specifications

Chemical Identifiers

5222-73-1
142.1
Dimethyl squarate; Squaric acid dimethyl ester
C6H6O4
MFCD00101316
3,4-Dimethoxy-3-cyclobutene-1,2-dione

Specifications

5222-73-1
53° to 56°C
MFCD00101316
Dimethyl squarate; Squaric acid dimethyl ester
98%
C6H6O4
142.1
5g
3,4-Dimethoxy-3-cyclobutene-1,2-dione

Safety and Handling

GHS H Statement
H334-H335-H315-H319-H317
May cause allergy or asthma symptoms or breathing difficulties if inhaled.
May cause respiratory irritation.
Causes skin irritation.
Causes serious eye irritation.
May cause an allergic skin reaction.

GHS P Statement
P284a-P261-P280-P305+P351+P338-P405-P501a
Avoid breathing dust/fume/gas/mist/vapors/spray.
Wear protective gloves/protective clothing/eye protection/face protection.
IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
Store locked up.
Dispose of contents/container in accordance with local/regional/national/international regulations.

Danger

Recommended Storage : 2° to 8°C