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Carbonyl compounds

Organic compounds that contain one or more carbonyl (a carbon atom with a double bond to an oxygen atom) functional groups. Includes compounds with functional groups that contain a carbonyl in their structure such as ketones, aldehydes, and others.
Complex Ketones (4,327)
Complex Aldehydes (4,284)
Dicarbonyl Compounds (582)
Alpha beta-unsaturated carbonyl compounds (547)
Acyloins (78)

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2,776 – 2,790 of 6,913 results
2,776

Sigma Aldrich 3-(2-Pyridinyl)-1H-pyrazol-5-amine dihydrochloride

MilliporeSigma Sigma Organics products encompass a wide range of quality reagents, solvents, catalysts, and building blocks for organic synthesis. From benchtop discovery to process development and scale-up, Sigma Organics solutions are built to meet the needs of synthetic chemists.

ENCOMPASS ENCOMPASS_PREFERRED
2,777

Sigma Aldrich {2-[(4-Methyl-1,2,5-oxadiazol-3-yl)oxy]ethyl}amine hydrochloride hydrate

MilliporeSigma Sigma Organics products encompass a wide range of quality reagents, solvents, catalysts, and building blocks for organic synthesis. From benchtop discovery to process development and scale-up, Sigma Organics solutions are built to meet the needs of synthetic chemists.

ENCOMPASS ENCOMPASS_PREFERRED
2,778

Sigma Aldrich [(5-Chloro-1H-benzimidazol-2-yl)methyl]methylamine dihydrochloride

MilliporeSigma Sigma Organics products encompass a wide range of quality reagents, solvents, catalysts, and building blocks for organic synthesis. From benchtop discovery to process development and scale-up, Sigma Organics solutions are built to meet the needs of synthetic chemists.

ENCOMPASS ENCOMPASS_PREFERRED
2,779

Sigma Aldrich N-Phenylmorpholine-4-carbothioamide

MilliporeSigma Sigma Organics products encompass a wide range of quality reagents, solvents, catalysts, and building blocks for organic synthesis. From benchtop discovery to process development and scale-up, Sigma Organics solutions are built to meet the needs of synthetic chemists.

ENCOMPASS ENCOMPASS_PREFERRED
2,780

Sigma Aldrich 3-Nitrobenzonitrile

MilliporeSigma Sigma Organics products encompass a wide range of quality reagents, solvents, catalysts, and building blocks for organic synthesis. From benchtop discovery to process development and scale-up, Sigma Organics solutions are built to meet the needs of synthetic chemists.

ENCOMPASS ENCOMPASS_PREFERRED
CAS 619-24-9
2,781

Sigma Aldrich 4-Hydroxybenzaldehyde

MilliporeSigma Sigma Organics products encompass a wide range of quality reagents, solvents, catalysts, and building blocks for organic synthesis. From benchtop discovery to process development and scale-up, Sigma Organics solutions are built to meet the needs of synthetic chemists.

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Percent Purity 98%
Linear Formula HOC6H4CHO
CAS 123-08-0
Molecular Weight (g/mol) 122.12
MDL Number MFCD00006939
RTECS Number CU6475000
Recommended Storage Room Temperature
Molecular Formula C7H6O2
EINECS Number 204-599-1
Melting Point 112°C to 116°C (lit.)
2,782

Sigma Aldrich Methyl malonyl chloride

MilliporeSigma Sigma Organics products encompass a wide range of quality reagents, solvents, catalysts, and building blocks for organic synthesis. From benchtop discovery to process development and scale-up, Sigma Organics solutions are built to meet the needs of synthetic chemists.

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Boiling Point 57°C to 59°C (12 mmHg)
Percent Purity ≥97.0% (AT)
Linear Formula CH3OCOCH2COCl
CAS 37517-81-0
Biological Activity Respiratory System
Molecular Weight (g/mol) 136.53
MDL Number MFCD00013657
Refractive Index n20/D 1.432 (literature); n20/D 1.432
Synonym Methyl chloroformylacetate
Recommended Storage 2°C to 8°C
Molecular Formula C4H5ClO3
EINECS Number 253-540-6
Density 1.273 g/mL (at 25°C (literature))
2,783

Sigma Aldrich 4-Methoxyphenyl isocyanate

MilliporeSigma Sigma Organics products encompass a wide range of quality reagents, solvents, catalysts, and building blocks for organic synthesis. From benchtop discovery to process development and scale-up, Sigma Organics solutions are built to meet the needs of synthetic chemists.

ENCOMPASS ENCOMPASS_PREFERRED
CAS 5416-93-3
2,784

Sigma Aldrich Methacrolein

MilliporeSigma Sigma Organics products encompass a wide range of quality reagents, solvents, catalysts, and building blocks for organic synthesis. From benchtop discovery to process development and scale-up, Sigma Organics solutions are built to meet the needs of synthetic chemists.

ENCOMPASS ENCOMPASS_PREFERRED
Boiling Point 68°C to 70°C (lit.)
Linear Formula H2C=C(CH3)CHO
Molecular Weight (g/mol) 70.09
Density 0.85 g/mL (at 25°C (literature))
Percent Purity 95%
CAS 78-85-3
MDL Number MFCD00006974
Refractive Index n20/D 1.416 (literature)
Synonym Methacrylaldehyde
RTECS Number OZ2625000
Recommended Storage 2°C to 8°C
Molecular Formula C4H6O
EINECS Number 201-150-1
Melting Point -81°C (lit.)
2,785

Sigma Aldrich 3,4-Dimethoxybenzaldehyde

MilliporeSigma Sigma Organics products encompass a wide range of quality reagents, solvents, catalysts, and building blocks for organic synthesis. From benchtop discovery to process development and scale-up, Sigma Organics solutions are built to meet the needs of synthetic chemists.

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Boiling Point 281°C (lit.)
Percent Purity 99%
Linear Formula (CH3O)2C6H3CHO
CAS 120-14-9
Molecular Weight (g/mol) 166.17
MDL Number MFCD00003363
Synonym Methylvanillin; NSC 24521; NSC 8500; Vanillin methyl ether; Veratraldehyde
RTECS Number YX5088000
Recommended Storage Room Temperature
Molecular Formula C9H10O3
EINECS Number 204-373-2
Melting Point 40°C to 43°C (lit.)
2,786

Sigma Aldrich 4-Hydroxyisophthalic acid

MilliporeSigma Sigma Organics products encompass a wide range of quality reagents, solvents, catalysts, and building blocks for organic synthesis. From benchtop discovery to process development and scale-up, Sigma Organics solutions are built to meet the needs of synthetic chemists.

ENCOMPASS ENCOMPASS_PREFERRED
CAS 636-46-4
2,787

Sigma Aldrich Pyruvic acid

MilliporeSigma Sigma Organics products encompass a wide range of quality reagents, solvents, catalysts, and building blocks for organic synthesis. From benchtop discovery to process development and scale-up, Sigma Organics solutions are built to meet the needs of synthetic chemists.

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Boiling Point 165°C (lit.)
Percent Purity 98%
Linear Formula CH3COCOOH
CAS 127-17-3
Molecular Weight (g/mol) 88.06
MDL Number MFCD00002585
Refractive Index n20/D 1.428 (literature)
Synonym alpha-Ketopropionic acid; 2-Oxopropionic acid
Recommended Storage 2°C to 8°C
Molecular Formula C3H4O3
EINECS Number 204-824-3
Density 1.267 g/mL (at 25°C (literature))
Melting Point 11°C to 12°C (lit.)
2,788

Sigma Aldrich 2-Imidazolecarboxaldehyde

MilliporeSigma Sigma Organics products encompass a wide range of quality reagents, solvents, catalysts, and building blocks for organic synthesis. From benchtop discovery to process development and scale-up, Sigma Organics solutions are built to meet the needs of synthetic chemists.

ENCOMPASS ENCOMPASS_PREFERRED
Percent Purity 97%
Linear Formula C4H4N2O
CAS 10111-08-7
Molecular Weight (g/mol) 96.09
MDL Number MFCD00003544
Recommended Storage Room Temperature
Molecular Formula C4H4N2O
Melting Point 209°C (lit.)
2,789

Sigma Aldrich Crotonaldehyde, mixture of cis and trans

MilliporeSigma Sigma Organics products encompass a wide range of quality reagents, solvents, catalysts, and building blocks for organic synthesis. From benchtop discovery to process development and scale-up, Sigma Organics solutions are built to meet the needs of synthetic chemists.

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Boiling Point 101°C to 102°C (lit.)
Percent Purity ≥99.5% (GC)
Linear Formula CH3CH=CHCHO
CAS 4170-30-3
Biological Activity Respiratory System
Molecular Weight (g/mol) 70.09
MDL Number MFCD00007003
Refractive Index n20/D 1.437
Synonym 2-Butenal, mixture of cis and trans
RTECS Number GP9499000
Recommended Storage 2°C to 8°C
Molecular Formula C4H6O
Density 0.853 g/mL (at 20°C (literature))
2,790

Sigma Aldrich Anthraquinone-2-sulfonic acid sodium salt monohydrate

MilliporeSigma Sigma Organics products encompass a wide range of quality reagents, solvents, catalysts, and building blocks for organic synthesis. From benchtop discovery to process development and scale-up, Sigma Organics solutions are built to meet the needs of synthetic chemists.

ENCOMPASS ENCOMPASS_PREFERRED
Percent Purity 97%
Linear Formula C14H7NaO5S -+ H2O
CAS 153277-35-1
Biological Activity Respiratory System
Molecular Weight (g/mol) 328.27
MDL Number MFCD00149068
Synonym 9,10-Dihydro-9,10-dioxo-2-anthracenesulfonic acid sodium salt monohydrate; Sodium anthraquinone-2-sulfonate
RTECS Number CB1095550
Recommended Storage Room Temperature
Molecular Formula C14H7NaO5S -+ H2O
EINECS Number 205-009-5