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3,4-Dimethoxy-3-cyclobutene-1,2-dione, 98%

Catalog No. AAA1818606
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Quantity:
1 g
5 g

CAS: 5222-73-1 | C6H6O4 | 142.11 g/mol

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.

This Thermo Scientific Chemicals brand product was originally part of the Alfa Aesar product portfolio. Some documentation and label information may refer to the legacy brand. The original Alfa Aesar product / item code or SKU reference has not changed as a part of the brand transition to Thermo Scientific Chemicals.

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.
TRUSTED_SUSTAINABILITY

Chemical Identifiers

CAS 5222-73-1
Molecular Formula C6H6O4
Molecular Weight (g/mol) 142.11
MDL Number MFCD00101316
InChI Key SZBNZTGCAMLMJY-UHFFFAOYSA-N
PubChem CID 123227
IUPAC Name 3,4-dimethoxycyclobut-3-ene-1,2-dione
SMILES COC1=C(C(=O)C1=O)OC

Specifications

Melting Point 53°C to 56°C
Quantity 5 g
Synonym 3,4-dimethoxy-3-cyclobutene-1,2-dione, dimethyl squarate, squaric acid dimethyl ester, 3-cyclobutene-1,2-dione, 3,4-dimethoxy, 3,4-dimethoxy-cyclobut-3-ene-1,2-dione, dimethoxycyclobut-3-ene-1,2-dione, 3-cyclobutene-1,2-dione,3,4-dimethoxy, 3,4-dimethoxycyclobut-3-en-1,2-dion, dimethoxycyclobutenedione, pubchem13709
Solubility Information Very soluble in water.
Formula Weight 142.1
Percent Purity 98%
Chemical Name or Material 3,4-Dimethoxy-3-cyclobutene-1,2-dione
Hazard Category H315-H317-H319-H334-H335
Hazard Statement 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.
Precautionary Statement P261-P264b-P271-P272-P280-P285-P302+P352-P304+P340-P305+P351+P338-P333+P313-P342+P311-P362-P501c
TSCA No
Recommended Storage Keep cold

RUO – Research Use Only

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