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70-23-5

Basic Information
CAS No.: 70-23-5
Name: Propanoic acid,3-bromo-2-oxo-, ethyl ester
Article Data: 25
Cas Database
Molecular Structure:
Molecular Structure of 70-23-5 (Propanoic acid,3-bromo-2-oxo-, ethyl ester)
Formula: C5H7BrO3
Molecular Weight: 195.013
Synonyms: Pyruvic acid,bromo-, ethyl ester (6CI,7CI,8CI);3-Bromo-2-(oxo)propionic acid ethyl ester;3-Bromo-2-oxopropanoic acid ethyl ester;3-Bromopyruvic acid ethyl ester;Bromopyruvic acid ethyl ester;Ethyl 3-bromo-2-oxopropanoate;Ethyl3-bromo-2-oxopropionate;Ethyl 3-bromopyruvate;NSC 62182;b-Bromopyruvic acid ethyl ester;
EINECS: 200-729-6
Density: 1.561 g/cm3
Melting Point: 79 - 82oC
Boiling Point: 224.3 °C at 760 mmHg
Flash Point: 75.4°C
Solubility: N/A
Appearance: Clear yellow to pink-red liquid
Hazard Symbols: IrritantXi, ToxicT
Risk Codes: 36/37/38-33-23/24
Safety: 26-36-24/25
Transport Information: UN 3265
PSA: 43.37000
LogP: 0.51350
Synthetic route
617-35-6

2-oxo-propionic acid ethyl ester

70-23-5

ethyl Bromopyruvate

Conditions
ConditionsYield
With tetrachloromethane; bromine at 50 - 60℃; unter Durchleiten von trockener Luft und Belichtung;
With bromine at 50 - 60℃;
With bromine at 65℃; unter Durchleiten von CO2;
56-23-5

tetrachloromethane

128-08-5

N-Bromosuccinimide

97-64-3, 2676-33-7

ethyl 2-hydroxypropionate

A

617-35-6

2-oxo-propionic acid ethyl ester

B

70-23-5

ethyl Bromopyruvate

547-64-8

methyl lactate

70-23-5

ethyl Bromopyruvate

Conditions
ConditionsYield
With tetrachloromethane; N-Bromosuccinimide
14214-10-9

ethyl diazopyruvate

A

1113-59-3

bromopyruvic acid

B

70-23-5

ethyl Bromopyruvate

Conditions
ConditionsYield
With diethyl ether; hydrogen bromide
56-23-5

tetrachloromethane

128-08-5

N-Bromosuccinimide

97-64-3, 2676-33-7

ethyl 2-hydroxypropionate

calcium carbonate

calcium carbonate

A

617-35-6

2-oxo-propionic acid ethyl ester

B

70-23-5

ethyl Bromopyruvate

97-64-3, 2676-33-7

ethyl 2-hydroxypropionate

70-23-5

ethyl Bromopyruvate

Conditions
ConditionsYield
Multi-step reaction with 2 steps
1: N-bromo-succinimide; calcium carbonate; tetrachloromethane
2: N-bromo-succinimide; tetrachloromethane; hydrogen bromide
View Scheme
64-17-5

ethanol

1113-59-3

bromopyruvic acid

70-23-5

ethyl Bromopyruvate

Conditions
ConditionsYield
hydrogenchloride In water at 30 - 40℃; for 9h;
70-23-5

ethyl Bromopyruvate

17356-08-0

thiourea

5398-36-7

2-aminothiazole-4-carboxylate

Conditions
ConditionsYield
In ethanol at 70℃; for 1h;100%
In ethanol at 70℃; for 1h; Hantzsch Thiazole Synthesis;100%
at 120℃; for 0.5h;99.5%
719-80-2

Ethyl diphenylphosphinite

70-23-5

ethyl Bromopyruvate

130742-47-1

diphenylphosphinicoenolpyruvate d'ethyle

Conditions
ConditionsYield
Ambient temperature;100%
70-23-5

ethyl Bromopyruvate

73956-15-7

2,2-diethoxythioacetamide

73956-16-8

ethyl 2-(diethoxymethyl)-1,3-thiazole-4-carboxylate

Conditions
ConditionsYield
With 3 A molecular sieve In ethanol for 0.5h; Heating;100%
With 4 A molecular sieve In ethanol for 1h; Hantzsch reaction; Heating;100%
With 4 Angstroem MS In ethanol for 1h; Heating;100%
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  • Casno:

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    Propanoic acid,3-bromo-2-oxo-, ethyl ester

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Chemistry

Molecular structure of Propanoic acid,3-bromo-2-oxo-, ethyl ester (CAS NO.70-23-5) is:

Product Name: Propanoic acid,3-bromo-2-oxo-, ethyl ester
CAS Registry Number: 70-23-5
IUPAC Name: Ethyl 3-bromo-2-oxopropanoate
Molecular Weight: 195.01128 [g/mol]  
Molecular Formula: C5H7BrO3  
XLogP3-AA: 1.2  
H-Bond Donor: 0  
H-Bond Acceptor: 3  
Refractive index: n20/D 1.469(lit.)
Storage temp.: 2-8 °C
Surface Tension: 39.5 dyne/cm 
Density: 1.561 g/cm3 
Flash Point: 75.4 °C 
Enthalpy of Vaporization: 46.08 kJ/mol 
Boiling Point: 224.3 °C at 760 mmHg 
Vapour Pressure: 0.0919 mmHg at 25°C
EINECS: 200-729-6
Product Categories: Aromatic Esters;Aliphatics;Esters;C2 to C5;Carbonyl Compounds

Safety Profile

Safty information about Propanoic acid,3-bromo-2-oxo-, ethyl ester (CAS NO.70-23-5) is:
Hazard Codes: IrritantXi; ToxicT
Risk Statements: 36/37/38-33-23/24 
R36/37/38:Irritating to eyes, respiratory system and skin. 
R33:Danger of cumulative effects. 
R23/24:Toxic by inhalation, in contact with skin.
Safety Statements: 26-36-24/25 
S26: In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. 
S36:Wear suitable protective clothing. 
S24/25:Avoid contact with skin and eyes.
RIDADR: 3265
WGK Germany: 3
F: 8-9-21
Hazard Note: Irritant
HazardClass: 8
PackingGroup: II
HS Code: 29183000

Specification

 Propanoic acid,3-bromo-2-oxo-, ethyl ester , its cas register number is 70-23-5. It also can be called Ethyl 3-bromopyruvate ; Ethyl bromopyruvate ; beta-Bromopyruvic acid ethyl ester .It is a clear yellow to pink-red liquid with strong offensive odor.