Product Name

  • Name

    Ethyl pyrazole-4-carboxylate

  • EINECS 609-452-9
  • CAS No. 37622-90-5
  • Article Data14
  • CAS DataBase
  • Density 1.214 g/cm3
  • Solubility
  • Melting Point 78-80 °C(lit.)
  • Formula C6H8N2O2
  • Boiling Point 307.8 °C at 760 mmHg
  • Molecular Weight 140.142
  • Flash Point 122.7 °C
  • Transport Information
  • Appearance White to pale yellow crystalline powder
  • Safety 26-37/39
  • Risk Codes 36/37/38
  • Molecular Structure Molecular Structure of 37622-90-5 (Ethyl pyrazole-4-carboxylate)
  • Hazard Symbols IrritantXi
  • Synonyms Pyrazole-4-carboxylicacid, ethyl ester (7CI);4-Ethoxycarbonyl-1H-pyrazole;Ethyl1H-pyrazole-4-carboxylate;Ethyl 4-pyrazolecarboxylate;
  • PSA 54.98000
  • LogP 0.58640

Synthetic route

3-amino-4-pyrazolecarboxylic acid ethyl ester
6994-25-8

3-amino-4-pyrazolecarboxylic acid ethyl ester

4-ethoxycarbonylpyrazole
37622-90-5

4-ethoxycarbonylpyrazole

Conditions
ConditionsYield
With hydrogenchloride; acetic acid; sodium nitrite In ethanol for 1h; Heating;99%
With hydrogenchloride; acetic acid; sodium nitrite In water at 0℃; for 0.5h;80 g
ethyl 1H-pyrazole-4-carboxylate hydrochloride

ethyl 1H-pyrazole-4-carboxylate hydrochloride

4-ethoxycarbonylpyrazole
37622-90-5

4-ethoxycarbonylpyrazole

Conditions
ConditionsYield
With sodium hydrogencarbonate In water at 20℃; for 16h;99%
1H-pyrazole-4-carboxylic acid
37718-11-9

1H-pyrazole-4-carboxylic acid

ethanol
64-17-5

ethanol

4-ethoxycarbonylpyrazole
37622-90-5

4-ethoxycarbonylpyrazole

Conditions
ConditionsYield
With sulfuric acid for 16h; Reflux;97%
With thionyl chloride at 0 - 20℃; for 3h;80%
With sulfuric acid
ethyl 2-formyl-3-oxopropanoate
80370-42-9

ethyl 2-formyl-3-oxopropanoate

4-ethoxycarbonylpyrazole
37622-90-5

4-ethoxycarbonylpyrazole

Conditions
ConditionsYield
With hydrazine dihydrochloride In ethanol at 0 - 20℃; for 32h;92%
With hydrazine In ethanol at 0 - 20℃; for 24h;86%
With hydrazine In ethanol at 0 - 20℃; for 17h;72.4%
With hydrazine In ethanol at 20℃; for 17h;72.4%
4-iodopyrazole
3469-69-0

4-iodopyrazole

ethanol
64-17-5

ethanol

carbon monoxide
201230-82-2

carbon monoxide

4-ethoxycarbonylpyrazole
37622-90-5

4-ethoxycarbonylpyrazole

Conditions
ConditionsYield
With triethylamine at 100℃; for 4h; Inert atmosphere;90%
...Expand
ethyl 1-(hydroxymethyl)-1H-pyrazole-4-carboxylate
112393-66-5

ethyl 1-(hydroxymethyl)-1H-pyrazole-4-carboxylate

A

4-ethoxycarbonylpyrazole
37622-90-5

4-ethoxycarbonylpyrazole

B

bis(4-ethoxycarbonylpyrazol-1-yl)methane

bis(4-ethoxycarbonylpyrazol-1-yl)methane

Conditions
ConditionsYield
With potassium fluoride; 18-crown-6 ether; methyl fluorosulfonate In tetrahydrofuran Heating;
sodium-compound of 1H-pyrazole-4-carboxylic acid dioxo-isobutyric acid ethyl ester

sodium-compound of 1H-pyrazole-4-carboxylic acid dioxo-isobutyric acid ethyl ester

4-ethoxycarbonylpyrazole
37622-90-5

4-ethoxycarbonylpyrazole

Conditions
ConditionsYield
With hydrazine hydrate; acetic acid
ethyl 2-cyanoacetate
105-56-6

ethyl 2-cyanoacetate

4-ethoxycarbonylpyrazole
37622-90-5

4-ethoxycarbonylpyrazole

Conditions
ConditionsYield
Multi-step reaction with 3 steps
1: acetic anhydride / 5 h / 120 °C
2: hydrazine hydrate / ethanol / 8 h / 0 °C
3: sodium nitrite; acetic acid; hydrogenchloride / water / 0.5 h / 0 °C
View Scheme
ethyl 2-dichloroacetyl-3-(dimethylamino)acrylate

ethyl 2-dichloroacetyl-3-(dimethylamino)acrylate

4-ethoxycarbonylpyrazole
37622-90-5

4-ethoxycarbonylpyrazole

Conditions
ConditionsYield
Multi-step reaction with 3 steps
1: toluene / 2 h / -50 °C
2: antimony(III) fluoride / N,N-dimethyl-formamide / 1 h / 90 °C
3: acetic acid; hydrogenchloride / 0.5 h / 0 °C
View Scheme
ethyl 3-(difluoromethyl)-1-methyl-1H-pyrazole-4-carboxylate
141573-95-7

ethyl 3-(difluoromethyl)-1-methyl-1H-pyrazole-4-carboxylate

4-ethoxycarbonylpyrazole
37622-90-5

4-ethoxycarbonylpyrazole

Conditions
ConditionsYield
With hydrogenchloride; acetic acid at 0℃; for 0.5h; Reagent/catalyst;
4-ethoxycarbonylpyrazole
37622-90-5

4-ethoxycarbonylpyrazole

methyl iodide
74-88-4

methyl iodide

ethyl 1-methylpyrazole-4-carboxylate
85290-80-8

ethyl 1-methylpyrazole-4-carboxylate

Conditions
ConditionsYield
With caesium carbonate In N,N-dimethyl-formamide at 20℃;100%
With potassium carbonate In N,N-dimethyl-formamide at 20℃; for 16h;85%
Stage #1: 4-ethoxycarbonylpyrazole With sodium hydride In tetrahydrofuran at 25℃; for 1h; Inert atmosphere;
Stage #2: methyl iodide In tetrahydrofuran at 60 - 65℃; for 6h;		83%
4-ethoxycarbonylpyrazole
37622-90-5

4-ethoxycarbonylpyrazole

(2-bromo-5-methyl-1,3-thiazol-4-yl)methanol
1187836-86-7

(2-bromo-5-methyl-1,3-thiazol-4-yl)methanol

ethyl 1-[(2-bromo-5-methyl-1,3-thiazol-4-yl)methyl]-1H-pyrazole-4-carboxylate
1190235-93-8

ethyl 1-[(2-bromo-5-methyl-1,3-thiazol-4-yl)methyl]-1H-pyrazole-4-carboxylate

Conditions
ConditionsYield
With di-isopropyl azodicarboxylate; triphenylphosphine In tetrahydrofuran at 0℃; for 2h; Inert atmosphere;100%
4-ethoxycarbonylpyrazole
37622-90-5

4-ethoxycarbonylpyrazole

C12H8ClF3S

C12H8ClF3S

ethyl 1-({5-[3-(trifluoromethyl)phenyl]thiophen-2-yl}methyl)-1H-pyrazole-4-carboxylate
1190235-28-9

ethyl 1-({5-[3-(trifluoromethyl)phenyl]thiophen-2-yl}methyl)-1H-pyrazole-4-carboxylate

Conditions
ConditionsYield
With potassium carbonate In N,N-dimethyl-formamide at 70℃;100%
4-ethoxycarbonylpyrazole
37622-90-5

4-ethoxycarbonylpyrazole

p-methoxybenzyl chloride
824-94-2

p-methoxybenzyl chloride

1-(4-methoxybenzyl)-1H-pyrazole-4-carboxylic acid ethyl ester

1-(4-methoxybenzyl)-1H-pyrazole-4-carboxylic acid ethyl ester

Conditions
ConditionsYield
With potassium carbonate In acetonitrile at 20℃; for 4h; Reflux; Inert atmosphere;100%
With potassium carbonate In acetonitrile for 4h; Reflux;100%
In acetonitrile at 20℃; for 4h; Reflux;99%
4-ethoxycarbonylpyrazole
37622-90-5

4-ethoxycarbonylpyrazole

methylamine
74-89-5

methylamine

N-methyl-1H-pyrazole-4-carboxamide
1154383-52-4

N-methyl-1H-pyrazole-4-carboxamide

Conditions
ConditionsYield
In water at 50 - 55℃; for 4h; Inert atmosphere;100%
In water at 65℃; for 2h;
4-ethoxycarbonylpyrazole
37622-90-5

4-ethoxycarbonylpyrazole

1-(allyloxy)-2-(chloromethyl)benzene
153034-33-4

1-(allyloxy)-2-(chloromethyl)benzene

ethyl-(2-(allyloxy)benzyl)-1H-pyrazole-4-carboxylate

ethyl-(2-(allyloxy)benzyl)-1H-pyrazole-4-carboxylate

Conditions
ConditionsYield
With potassium carbonate In acetonitrile for 6h; Reflux;100%
4-ethoxycarbonylpyrazole
37622-90-5

4-ethoxycarbonylpyrazole

sodium chlorodifluoroacetate
1895-39-2

sodium chlorodifluoroacetate

ethyl 1-(difluoromethyl)-1H-pyrazole-4-carboxylate
129819-40-5

ethyl 1-(difluoromethyl)-1H-pyrazole-4-carboxylate

Conditions
ConditionsYield
With sodium hydrogencarbonate In N,N-dimethyl-formamide at 100℃;100%
With sodium hydrogencarbonate In N,N-dimethyl-formamide at 100℃; for 40h;
4-ethoxycarbonylpyrazole
37622-90-5

4-ethoxycarbonylpyrazole

[3-[N-(tert-butoxycarbonyl)amino]phenyl]methyl bromide
118684-32-5

[3-[N-(tert-butoxycarbonyl)amino]phenyl]methyl bromide

ethyl 1-(3-((tert-butoxycarbonyl)amino)benzyl)-1H-pyrazole-4-carboxylate

ethyl 1-(3-((tert-butoxycarbonyl)amino)benzyl)-1H-pyrazole-4-carboxylate

Conditions
ConditionsYield
With potassium carbonate In acetone for 3h; Reflux;100%
4-ethoxycarbonylpyrazole
37622-90-5

4-ethoxycarbonylpyrazole

(2-trimethylethylsilylethoxy)methyl chloride
76513-69-4

(2-trimethylethylsilylethoxy)methyl chloride

ethyl 1-((2-(trimethylsilyl)ethoxy)methyl)-1H-pyrazole-4-carboxylate
1125880-03-6

ethyl 1-((2-(trimethylsilyl)ethoxy)methyl)-1H-pyrazole-4-carboxylate

Conditions
ConditionsYield
Stage #1: 4-ethoxycarbonylpyrazole With sodium hydride In N,N-dimethyl-formamide; mineral oil at 0℃; for 0.25h;
Stage #2: (2-trimethylethylsilylethoxy)methyl chloride In N,N-dimethyl-formamide; mineral oil at 0 - 20℃; for 16h;		99.3%
Stage #1: 4-ethoxycarbonylpyrazole With sodium hydride In tetrahydrofuran at 0 - 20℃; for 3h; Inert atmosphere;
Stage #2: (2-trimethylethylsilylethoxy)methyl chloride In tetrahydrofuran at 0 - 20℃; for 3h; Inert atmosphere;		98%
With sodium hydride In tetrahydrofuran at 0 - 20℃;96%
4-ethoxycarbonylpyrazole
37622-90-5

4-ethoxycarbonylpyrazole

3,5-dibromo-1H-pyrazole-4-carboxylic acid ethyl ester
1017802-86-6

3,5-dibromo-1H-pyrazole-4-carboxylic acid ethyl ester

Conditions
ConditionsYield
With bromine; sodium acetate In ethanol at 20℃; for 5h;99%
With bromine; sodium acetate In ethanol; water at 20℃; for 10h;92%
With bromine; sodium acetate In ethanol at 20℃;
4-ethoxycarbonylpyrazole
37622-90-5

4-ethoxycarbonylpyrazole

dimethylamino sulfonyl chloride
13360-57-1

dimethylamino sulfonyl chloride

ethyl 1-(N,N-dimethylsulfamoyl)-1H-pyrazole-4-carboxylate

ethyl 1-(N,N-dimethylsulfamoyl)-1H-pyrazole-4-carboxylate

Conditions
ConditionsYield
With 1,4-diaza-bicyclo[2.2.2]octane In acetonitrile for 1h; Inert atmosphere;99%
Stage #1: 4-ethoxycarbonylpyrazole With sodium hydride In tetrahydrofuran; mineral oil at 0℃; for 0.333333h; Inert atmosphere;
Stage #2: dimethylamino sulfonyl chloride In tetrahydrofuran; mineral oil at 25℃; for 22h; Inert atmosphere;		91%
4-ethoxycarbonylpyrazole
37622-90-5

4-ethoxycarbonylpyrazole

C13H8ClFN2O2

C13H8ClFN2O2

C19H15FN4O4

C19H15FN4O4

Conditions
ConditionsYield
With potassium phosphate; tris-(dibenzylideneacetone)dipalladium(0); tert-butyl XPhos In tert-butyl alcohol at 80℃; Inert atmosphere;99%
4-ethoxycarbonylpyrazole
37622-90-5

4-ethoxycarbonylpyrazole

2-(tert-butyldimethylsilyloxy)ethyl bromide
86864-60-0

2-(tert-butyldimethylsilyloxy)ethyl bromide

ethyl 1-(2-((tert-butyldimethylsilyl)oxy)ethyl)-1H-pyrazole-4-carboxylate

ethyl 1-(2-((tert-butyldimethylsilyl)oxy)ethyl)-1H-pyrazole-4-carboxylate

Conditions
ConditionsYield
With caesium carbonate In acetonitrile at 20℃; for 16h; Cooling with ice; Inert atmosphere; regioselective reaction;99%
4-ethoxycarbonylpyrazole
37622-90-5

4-ethoxycarbonylpyrazole

(1-bromoethyl)benzne
585-71-7, 38661-81-3

(1-bromoethyl)benzne

1-(1-phenylethyl)-1H-pyrazole-4-carboxylic acid ethyl ester

1-(1-phenylethyl)-1H-pyrazole-4-carboxylic acid ethyl ester

Conditions
ConditionsYield
Stage #1: 4-ethoxycarbonylpyrazole With sodium hydride In N,N-dimethyl-formamide at 0℃; for 0.5h;
Stage #2: (1-bromoethyl)benzne In N,N-dimethyl-formamide at 20℃; for 2h;		99%
2-chloro-6-nitro-4-quinazolone
80195-33-1

2-chloro-6-nitro-4-quinazolone

4-ethoxycarbonylpyrazole
37622-90-5

4-ethoxycarbonylpyrazole

1-(6-nitro-4-oxo-3,4-dihydro-quinazolin-2-yl)-1H-pyrazole-4-carboxylic acid ethyl ester
1238692-93-7

1-(6-nitro-4-oxo-3,4-dihydro-quinazolin-2-yl)-1H-pyrazole-4-carboxylic acid ethyl ester

Conditions
ConditionsYield
In xylenes at 20 - 130℃; for 19h;98%
4-ethoxycarbonylpyrazole
37622-90-5

4-ethoxycarbonylpyrazole

2-chloro-1-{4-(3,5-di-tert-butyl-4-hydroxyphenylsulfanyl)-4-[3,5-di-tert-butyl-4-(3-pyrazol-1-ylpropoxy)phenylsulfanyl]-piperidin-1-yl}ethanone
1402049-39-1

2-chloro-1-{4-(3,5-di-tert-butyl-4-hydroxyphenylsulfanyl)-4-[3,5-di-tert-butyl-4-(3-pyrazol-1-ylpropoxy)phenylsulfanyl]-piperidin-1-yl}ethanone

1-(2-{4-(3,5-di-tert-butyl-4-hydroxyphenylsulfanyl)-4-[3,5-di-tert-butyl-4-(3-pyrazol-1-ylpropoxy)phenylsulfanyl]piperidin-1-yl}-2-oxoethyl)-1H-pyrazole-4-carboxylic acid ethyl ester
1402049-40-4

1-(2-{4-(3,5-di-tert-butyl-4-hydroxyphenylsulfanyl)-4-[3,5-di-tert-butyl-4-(3-pyrazol-1-ylpropoxy)phenylsulfanyl]piperidin-1-yl}-2-oxoethyl)-1H-pyrazole-4-carboxylic acid ethyl ester

Conditions
ConditionsYield
Stage #1: 4-ethoxycarbonylpyrazole; 2-chloro-1-{4-(3,5-di-tert-butyl-4-hydroxyphenylsulfanyl)-4-[3,5-di-tert-butyl-4-(3-pyrazol-1-ylpropoxy)phenylsulfanyl]-piperidin-1-yl}ethanone With sodium hydride In tetrahydrofuran; mineral oil at 20℃; for 1h;
Stage #2: With ammonium chloride In tetrahydrofuran; mineral oil		98%
4-ethoxycarbonylpyrazole
37622-90-5

4-ethoxycarbonylpyrazole

5-iodo-2-neopentyloxy-benzonitrile

5-iodo-2-neopentyloxy-benzonitrile

ethyl 1-(3'-cyano-4'-neopentyloxyphenyl)-pyrazol-4-carboxylate
206884-97-1

ethyl 1-(3'-cyano-4'-neopentyloxyphenyl)-pyrazol-4-carboxylate

Conditions
ConditionsYield
With trans-N,N'-dimethyl-1,2-cyclohexyldiamine; copper(l) iodide; potassium carbonate In N,N-dimethyl-formamide at 110℃; for 24h; Inert atmosphere; regioselective reaction;98%
4-ethoxycarbonylpyrazole
37622-90-5

4-ethoxycarbonylpyrazole

5-bromo-2-(isopropylthio)benzonitrile

5-bromo-2-(isopropylthio)benzonitrile

ethyl 1-(3-cyano-4-(isopropylthio)phenyl)-1H-pyrazole-4-carboxylate

ethyl 1-(3-cyano-4-(isopropylthio)phenyl)-1H-pyrazole-4-carboxylate

Conditions
ConditionsYield
With copper(l) iodide; potassium carbonate In N,N-dimethyl-formamide at 10℃; for 24h; Inert atmosphere;98%
4-chloromethyl-3,5-dimethylisoxazole
19788-37-5

4-chloromethyl-3,5-dimethylisoxazole

4-ethoxycarbonylpyrazole
37622-90-5

4-ethoxycarbonylpyrazole

ethyl 1-((3,5-dimethylisoxazol-4-yl)methyl)-1H-pyrazole-4-carboxylate
1119833-53-2

ethyl 1-((3,5-dimethylisoxazol-4-yl)methyl)-1H-pyrazole-4-carboxylate

Conditions
ConditionsYield
With caesium carbonate In N,N-dimethyl-formamide at 80℃; for 16h; Inert atmosphere;97%
With caesium carbonate In N,N-dimethyl-formamide80%
With caesium carbonate In N,N-dimethyl-formamide at 80℃; for 12h;80%
With caesium carbonate In N,N-dimethyl-formamide at 80℃; for 12h;80%
4-ethoxycarbonylpyrazole
37622-90-5

4-ethoxycarbonylpyrazole

p-Methoxybenzyl bromide
2746-25-0

p-Methoxybenzyl bromide

1-(4-methoxybenzyl)-1H-pyrazole-4-carboxylic acid ethyl ester

1-(4-methoxybenzyl)-1H-pyrazole-4-carboxylic acid ethyl ester

Conditions
ConditionsYield
With potassium carbonate In acetone at 20 - 50℃; for 17h;97%
With potassium carbonate In acetone at 20 - 50℃; for 17h;97%
With potassium carbonate In acetone for 12h; Reflux;
4-ethoxycarbonylpyrazole
37622-90-5

4-ethoxycarbonylpyrazole

1H-pyrazole-4-carbaldehyde
35344-95-7

1H-pyrazole-4-carbaldehyde

Conditions
ConditionsYield
With n-butyllithium; diisobutylaluminium hydride; tert-butyl alcohol In tetrahydrofuran; hexane at 0℃;97%
2-(2-bromoethyl)-2-methyl-1,3-dioxolane
37865-96-6

2-(2-bromoethyl)-2-methyl-1,3-dioxolane

4-ethoxycarbonylpyrazole
37622-90-5

4-ethoxycarbonylpyrazole

ethyl 1-(2-(2-methyl-1,3-dioxolan-2-yl)ethyl)-1H-pyrazole-4-carboxylate

ethyl 1-(2-(2-methyl-1,3-dioxolan-2-yl)ethyl)-1H-pyrazole-4-carboxylate

Conditions
ConditionsYield
With caesium carbonate In acetonitrile at 65℃; for 2h; Sealed tube;97%
4-ethoxycarbonylpyrazole
37622-90-5

4-ethoxycarbonylpyrazole

(4-((5-cyclopropyl-3-(2,6-dichlorophenyl)isoxazol-4-yl)methoxy)bicyclo[2.2.2]octan-1-yl)methanol

(4-((5-cyclopropyl-3-(2,6-dichlorophenyl)isoxazol-4-yl)methoxy)bicyclo[2.2.2]octan-1-yl)methanol

ethyl 1-((4-((5-cyclopropyl-3-(2,6-dichlorophenyl)isoxazol-4-yl)methoxy)bicyclo[2.2.2]octan-1-yl)methyl)-1H-pyrazole-4-carboxylate

ethyl 1-((4-((5-cyclopropyl-3-(2,6-dichlorophenyl)isoxazol-4-yl)methoxy)bicyclo[2.2.2]octan-1-yl)methyl)-1H-pyrazole-4-carboxylate

Conditions
ConditionsYield
With cyanomethylenetributyl-phosphorane In toluene at 100℃; for 6h;97%
4-ethoxycarbonylpyrazole
37622-90-5

4-ethoxycarbonylpyrazole

1H-pyrazole-4-carboxylic acid
37718-11-9

1H-pyrazole-4-carboxylic acid

Conditions
ConditionsYield
With sodium hydroxide In water for 2h; Reflux; Inert atmosphere;96%
4-ethoxycarbonylpyrazole
37622-90-5

4-ethoxycarbonylpyrazole

xanthene
92-83-1

xanthene

ethyl 1-(9H-xanthen-9-yl)-1H-pyrazole-4-carboxylate

ethyl 1-(9H-xanthen-9-yl)-1H-pyrazole-4-carboxylate

Conditions
ConditionsYield
With dibenzoyl peroxide In 1,2-dichloro-ethane at 80℃; for 6h; Schlenk technique;96%
4-ethoxycarbonylpyrazole
37622-90-5

4-ethoxycarbonylpyrazole

3,7-dihydro-1,3,7-trimethyl-1H-purine-2,6-dione
58-08-2

3,7-dihydro-1,3,7-trimethyl-1H-purine-2,6-dione

triethyl 1,1',1''-(1,3,7-trimethyl-2,6-dioxohexahydro-4H-purine-4,5,8(7H)-triyl)tris(1H-pyrazole-4-carboxylate)

triethyl 1,1',1''-(1,3,7-trimethyl-2,6-dioxohexahydro-4H-purine-4,5,8(7H)-triyl)tris(1H-pyrazole-4-carboxylate)

Conditions
ConditionsYield
With tetrabutylammonium tetrafluoroborate In acetonitrile at 45℃; for 10h; Inert atmosphere; Electrochemical reaction; Green chemistry; diastereoselective reaction;96%
4-ethoxycarbonylpyrazole
37622-90-5

4-ethoxycarbonylpyrazole

2-benzyloxy-3-methylbutanoic acid
56972-71-5

2-benzyloxy-3-methylbutanoic acid

ethyl 1-(1-(benzyloxy)-2-methylpropyl)-1H-pyrazole-4-carboxylate

ethyl 1-(1-(benzyloxy)-2-methylpropyl)-1H-pyrazole-4-carboxylate

Conditions
ConditionsYield
With 2,4,6-trimethyl-pyridine; tert-butylammonium hexafluorophosphate(V) In dichloromethane for 3h; Molecular sieve; Electrochemical reaction;96%

Ethyl pyrazole-4-carboxylate Chemical Properties

Empirical Formula: C6H8N2O2
Molecular Weight: 140.1399
Nominal Mass: 140 Da
Average Mass: 140.1399 Da
Monoisotopic Mass: 140.058578 Da 
Index of Refraction: 1.521
Molar Refractivity: 35.18 cm3
Molar Volume: 115.3 cm3
Surface Tension: 49.2 dyne/cm
Density: 1.214 g/cm3
Flash Point: 122.7 °C
Enthalpy of Vaporization: 54.84 kJ/mol
Boiling Point: 307.8 °C at 760 mmHg
Vapour Pressure: 0.000709 mmHg at 25 °C
Melting point: 78-80 °C(lit.)
Appearance: White to pale yellow crystalline powder
Structure of Ethyl pyrazole-4-carboxylate (CAS NO.37622-90-5):
                    
IUPAC Name: Ethyl 1H-pyrazole-4-carboxylate
Canonical SMILES: CCOC(=O)C1=CNN=C1
InChI: InChI=1S/C6H8N2O2/c1-2-10-6(9)5-3-7-8-4-5/h3-4H,2H2,1H3,(H,7,8)
InChIKey: KACZQOKEFKFNDB-UHFFFAOYSA-N
Product Category of Ethyl pyrazole-4-carboxylate (CAS NO.37622-90-5): Heterocyclic Building Blocks;Pyrazoles

Ethyl pyrazole-4-carboxylate Safety Profile

Hazard Codes of Ethyl pyrazole-4-carboxylate (CAS NO.37622-90-5): IrritantXi
Risk Statements: 36/37/38
R36/37/38:Irritating to eyes, respiratory system and skin.
Safety Statements: 26-37/39 
S26: In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. 
S37/39:Wear suitable gloves and eye/face protection.
WGK Germany: 3
Hazard Note: Irritant

Ethyl pyrazole-4-carboxylate Specification

 Ethyl pyrazole-4-carboxylate , its cas register number is 37622-90-5. It also can be called Ethyl 4-pyrazolecarboxylate ; and 4-Acetylpyrazole .

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