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CAS Number: 58607-90-2
ethyl 5-oxo-4,5-dihydro-1H-pyrazole-3-carboxylate

Structure

ethyl 5-oxo-4,5-dihydro-1H-pyrazole-3-carboxylate
Name: ethyl 5-oxo-4,5-dihydro-1H-pyrazole-3-carboxylate
Synonyms:
General Information
Product Number: 58607902

CAS Registry Number: 58607-90-2

Name:

1H-​Pyrazole-​3-​carboxylic acid, 4,​5-​dihydro-​5-​oxo-​, ethyl ester
2-​Pyrazoline-​3-​carboxylic acid, 5-​oxo-​, ethyl ester (6CI,​7CI); NSC 14668 

 

Chemical Formula: C6H8N2O3
Exact Mass: 156.05
Molecular Weight: 156.14
m/z: 156.05 (100.0%), 157.06 (6.7%)
Elemental Analysis: C, 46.15; H, 5.16; N, 17.94; O, 30.74

 

Thermal Properties Value Condition Note
Melting Point 183-184 °C Solv: ethyl acetate (141-78-6) (1)IC
Melting Point 178 °C   (2)CAS
Melting Point 175-178 °C   (3)IC

Specification

98%

References
  1. (1) Takei, Hisashi; Bulletin of the Chemical Society of Japan 1979, V52(1), P208-11 CAPLUS
  2. (2) Ruggli, Paul; Helvetica Chimica Acta 1920, V3, P493-514 CAPLUS
  3. (3) Kosower, Edward M.; Journal of Organic Chemistry 1982, V47(2), P214-21 CAPLUS
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