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

$222.86 - $222.86

Chemical Identifiers

Chemical Name or Material 3,4-Dimethoxy-3-cyclobutene-1,2-dione
CAS 5222-73-1
Molecular Formula C6H6O4
Formula Weight 142.10g/mol
MDL Number MFCD00101316
Synonym Dimethyl squarate; Squaric acid dimethyl ester
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Products
Catalog Number Mfr. No. Quantity Price Quantity    

AAA1818606

 
alfa aesar™
A18186-06
5g Each for $222.86
Description & Specifications

Specifications

Melting Point 53° to 56°C
Quantity 5g
Chemical Name or Material 3,4-Dimethoxy-3-cyclobutene-1,2-dione
CAS 5222-73-1
Assay 98%
Molecular Formula C6H6O4
Formula Weight 142.10g/mol
MDL Number MFCD00101316
Synonym Dimethyl squarate; Squaric acid dimethyl ester
Health Hazard 1 Danger
Health Hazard 2 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.
Health Hazard 3 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.
Recommended Storage 2° to 8°C

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.

Safety and Handling

Danger

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.

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.

2° to 8°C