Cas 4302-50-5,4-ethynyl-1,5-dimethyl-2-phenyl-1H-pyrazol-3(2H)-one

4302-50-5

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Basic information

Product Name: 4-ethynyl-1,5-dimethyl-2-phenyl-1H-pyrazol-3(2H)-one
Synonyms: 4-ethynyl-1,5-dimethyl-2-phenyl-1H-pyrazol-3(2H)-one
CAS NO:4302-50-5
Molecular Formula:
Molecular Weight: 212.251
EINECS: N/A
Product Categories: N/A

Chemical Properties

Melting Point: N/A
Boiling Point: N/A
Flash Point: N/A
Appearance: N/A
Density: N/A
Refractive Index: N/A
Storage Temp.: N/A
Solubility: N/A
CAS DataBase Reference: 4-ethynyl-1,5-dimethyl-2-phenyl-1H-pyrazol-3(2H)-one(CAS DataBase Reference)
NIST Chemistry Reference: 4-ethynyl-1,5-dimethyl-2-phenyl-1H-pyrazol-3(2H)-one(4302-50-5)
EPA Substance Registry System: 4-ethynyl-1,5-dimethyl-2-phenyl-1H-pyrazol-3(2H)-one(4302-50-5)

Safety Data

Hazard Codes: N/A
Statements: N/A
Safety Statements: N/A
WGK Germany:
RTECS:
HazardClass: N/A
PackingGroup: N/A
Hazardous Substances Data: 4302-50-5(Hazardous Substances Data)

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Check Digit Verification of cas no

The CAS Registry Mumber 4302-50-5 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 4,3,0 and 2 respectively; the second part has 2 digits, 5 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 4302-50:
(6*4)+(5*3)+(4*0)+(3*2)+(2*5)+(1*0)=55
55 % 10 = 5
So 4302-50-5 is a valid CAS Registry Number.

4302-50-5Upstream product

60-80-0 antipyrine

4302-50-5Downstream Products

4302-50-5Relevant academic research and scientific papers

Gold(i)- and rhodium(iii)-catalyzed formal regiodivergent C-H alkynylation of 1-arylpyrazolones

Wang, Xueli,Li, Xingwei,Zhang, Yao,Xia, Lixin

, p. 2860 - 2864 (2018)

Formal regiodivergent C-H alkynylation of 1-aryl-5-pyrazolones has been realized under the catalysis of Rh(iii) and Au(i) complexes by using a hypervalent iodine reagent as the alkyne source. Mechanistic studies indicate that the regioselectivity is ascribed to not only the choice of the catalyst but also the nature of the substrate. The substrate scope and functional group compatibility have been fully examined.

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