Cas 129302-14-3,1-[1-(4-Chloro-phenyl)-5-hydroxy-3-methyl-1H-pyrazol-4-yl]-butane-1,3-dione

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Check Digit Verification of cas no

The CAS Registry Mumber 129302-14-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,9,3,0 and 2 respectively; the second part has 2 digits, 1 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 129302-14:
(8*1)+(7*2)+(6*9)+(5*3)+(4*0)+(3*2)+(2*1)+(1*4)=103
103 % 10 = 3
So 129302-14-3 is a valid CAS Registry Number.

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129302-14-3Relevant academic research and scientific papers

C-C bond cleavage studies in bipyrazoles: A convenient synthesis of pyrazolo-5-ols

Singh, Shiv P.,Naithani, Rajesh,Aggarwal, Ranjana,Prakash, Om

, p. 611 - 619 (2005)

The treatment of 4-acetoacetyl derivative (3) of the pyrazoles with hydrazines in ethanol/HCl furnished a variety of bipyrazoles (4). However, when the reaction was performed in sodium acetate/acetic acid/ethanol, different hydrazines gave different products. Under these conditions an unexpected C-C bond cleavage was observed thus affording a convenient route for the formation of pyrazolo-5-ols (5 and 6).

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