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310778 Aldrich

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

98%

Synonym: Diethyl squarate, Squaric acid diethyl ester

  • CAS Number 5231-87-8

  • Linear Formula (C2H5O)2C4(=O)2

  • Molecular Weight 170.16

  •  Beilstein Registry Number 640626

  •  MDL number MFCD00001333

  •  PubChem Substance ID 24858814

  • Popular Documents:  FTNMR (PDF)  

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Properties

Related Categories Building Blocks, C7 to C8, Carbonyl Compounds, Chemical Synthesis, Ketones,
InChI Key   DFSFLZCLKYZYRD-UHFFFAOYSA-N
assay   98%
refractive index   n20/D 1.509(lit.)
bp   95 °C/0.1 mmHg(lit.)
density   1.15 g/mL at 25 °C(lit.)

Description

Packaging

5 g in glass bottle

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.

Price and Availability

Safety & Documentation

Safety Information

Symbol 
Signal word 
Danger
Hazard statements 
RIDADR 
NONH for all modes of transport
WGK Germany 
3
Flash Point(F) 
230 °F
Flash Point(C) 
110 °C
Protocols & Articles
Peer-Reviewed Papers
15

References

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