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Sigma-Aldrich

Ethyl 4-pyrazolecarboxylate

99%

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About This Item

Empirical Formula (Hill Notation):
C6H8N2O2
CAS Number:
37622-90-5
Molecular Weight:
140.14
MDL number:
MFCD00010844
UNSPSC Code:
12352100
PubChem Substance ID:
24857940
NACRES:
NA.22

assay

99%

form

powder

bp

138-140 °C/3 mmHg (lit.)

mp

78-80 °C (lit.)

SMILES string

CCOC(=O)c1cn[nH]c1

InChI

1S/C6H8N2O2/c1-2-10-6(9)5-3-7-8-4-5/h3-4H,2H2,1H3,(H,7,8)

InChI key

KACZQOKEFKFNDB-UHFFFAOYSA-N

Application

Ethyl 4-pyrazolecarboxylate was used in the preparation of 4-chloromethylpyrazole. It was also used as starting material in a copper-diamine-catalyzed N-arylation reaction.

pictograms

Exclamation mark
GHS07

signalword

Warning

Hazard Classifications

Eye Irrit. 2 - Skin Irrit. 2 - STOT SE 3

target_organs

Respiratory system

Storage Class

11 - Combustible Solids

wgk_germany

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

dust mask type N95 (US), Eyeshields, Gloves

Certificates of Analysis (COA)

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Jon C Antilla et al.
The Journal of organic chemistry, 69(17), 5578-5587 (2004-08-17)
This paper details the copper-catalyzed N-arylation of pi-excessive nitrogen heterocycles. The coupling of either aryl iodides or aryl bromides with common nitrogen heterocycles (pyrroles, pyrazoles, indazoles, imidazoles, and triazoles) was successfully performed in good yield with catalysts derived from diamine
J F Schindler et al.
Journal of protein chemistry, 15(8), 737-742 (1996-11-01)
Improved and efficient techniques have led to an explosive growth in the application of site-directed mutagenesis to the study of enzymes. However, the limited availability of only those 20 amino acids that are translated by the genetic code has prevented

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