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

ALDRICH/310778 - 98%

Synonym: Diethyl squarate; Squaric acid diethyl ester

CAS Number: 5231-87-8
Empirical Formula (Hill Notation): C₈H₁₀O₄
Molecular Weight: 170.16
MDL Number: MFCD00001333
Linear Formula: (C₂H₅O)₂C₄(=O)₂
Product Type: Chemical

Catalog Number	PKG Qty.	Price	Quantity


45-310778-5G	5 g	$145.00 1/EA		Add To Favorites

Properties
Descriptions
Safety Info.
Basic Data

assay	98%
bp	95 °C/0.1 mmHg (lit.)
density	1.15 g/mL at 25 °C (lit.)
form	liquid
functional group	ether
	ketone
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
Quality Level	100
refractive index	n20/D 1.509 (lit.)
SMILES string	CCOC1=C(OCC)C(=O)C1=O

Application:	3,4-Dethoxy-3-cyclobutene-1,2-dione is used as a starting material for synthesis of furanones and quinones. It undergoes ethoxy substitution with amines and unsaturated organosilanes.
General description:	The reaction of 3,4-diethoxy-3-cyclobutene-1,2-dione (squaric acid diethyl ester) with glycosylamines (formed by reducing oligosaccharides) was studied. The derivatives formed were linked to amino-functionalized lipids, solids or proteins.
Packaging:	5 g in glass bottle

Symbol	GHS07,GHS08
Signal word	Danger
Hazard statements	H315 - H317 - H319 - H334 - H335
Precautionary statements	P280 - P302 + P352 - P305 + P351 + P338
Hazard Codes	Xn
Risk Statements	36/37/38-42/43
Safety Statements	7-26-37/39
RIDADR	NONH for all modes of transport
WGK Germany	WGK 3
Flash Point(F)	230.0 °F - closed cup
Flash Point(C)	110 °C - closed cup

Purity	98%
bp	95 °C/0.1 mmHg (lit.)
Density	1.15 g/mL at 25 °C (lit.)
Refractive Index	n20/D 1.509 (lit.)
UNSPSC	12352100

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