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380067 Sigma-Aldrich

4,4-Dimethoxy-2-butanone

technical grade, ≥90%

Synonym: 3-Ketobutyraldehyde dimethyl acetal, 3-Oxobutyraldehyde dimethylacetal, 4,4-Dimethoxy-2-butanone, Acetylacetaldehyde dimethylacetal

  • CAS Number 5436-21-5

  • Linear Formula CH3COCH2CH(OCH3)2

  • Molecular Weight 132.16

  •  Beilstein/REAXYS Number 1702372

  •  EC Number 226-605-1

  •  MDL number MFCD00008789

  •  PubChem Substance ID 24863716

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Properties

Related Categories Building Blocks, C3 to C6, Carbonyl Compounds, Chemical Synthesis, Ketones,
grade   technical grade
InChI Key   PJCCSZUMZMCWSX-UHFFFAOYSA-N
assay   ≥90%
refractive index   n20/D 1.414 (lit.)
bp   70-73 °C/20 mmHg(lit.)
density   0.996 g/mL at 25 °C (lit.)

Description

General description

4,4-Dimethoxy-2-butanone (Acetylacetaldehyde dimethylacetal) is a ketone.

Application

4,4-Dimethoxy-2-butanone (Acetylacetaldehyde dimethylacetal) may be used in the preparation of N,N-diethyl-[2-(4-fluorophenyl)-5-methylpyrazolo[1,5-a]-pyrimidin-3-yl]acetamide and acetoacetaldehyde.

4,4-Dimethoxy-2-butanone (β-ketobutyracetal) may be used in the preparation of:
• (R)-4,4-dimethoxy-2-butanol
• pyrazoles and pyrimidines
• [7,16-dihydro- 6,15( 17)-dimetbyldibenzo[b,i]-[1,4,8,11]tetrilazacyclotetradecinato-N5,N9,N14,N18]nickel{II)

Packaging

100, 500 mL in glass bottle

Safety & Documentation

Safety Information

Symbol 
GHS02  GHS02
Signal word 
Warning
Hazard statements 
RIDADR 
UN 1989C 3 / PGIII
WGK Germany 
2
RTECS 
EL7592500
Flash Point(F) 
134.6 °F
Flash Point(C) 
57 °C

Documents

Certificate of Analysis

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Certificate of Origin

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Protocols & Articles
Peer-Reviewed Papers
15

References

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