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Key Documents

31630

Sigma-Aldrich

3,4-Diethoxy-3-cyclobutene-1,2-dione

purum, ≥97.0% (GC)

Synonym(s):

Diethyl squarate, Squaric acid diethyl ester

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About This Item

Linear Formula:
(C2H5O)2C4(=O)2
CAS Number:
Molecular Weight:
170.16
Beilstein:
640626
MDL number:
UNSPSC Code:
12352100
PubChem Substance ID:

grade

purum

Assay

≥97.0% (GC)

refractive index

n20/D 1.509 (lit.)
n20/D 1.509

bp

95 °C/0.1 mmHg (lit.)

density

1.15 g/mL at 25 °C (lit.)

storage temp.

2-8°C

SMILES string

CCOC1=C(OCC)C(=O)C1=O

InChI

1S/C8H10O4/c1-3-11-7-5(9)6(10)8(7)12-4-2/h3-4H2,1-2H3

InChI key

DFSFLZCLKYZYRD-UHFFFAOYSA-N

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Other Notes

Building block for the synthesis of substituted and fused p-benzoquinones and of cyclopentenediones

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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L.D. Foland et al.
Journal of the American Chemical Society, 111, 975-975 (1989)
S. Iyer et al.
Journal of the American Chemical Society, 109, 2759-2759 (1987)
S.T. Perri et al.
Journal of the American Chemical Society, 112, 1897-1897 (1990)
M.W. Reed et al.
The Journal of Organic Chemistry, 53, 4166-4166 (1988)

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