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186140-66-9

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186140-66-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 186140-66-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,8,6,1,4 and 0 respectively; the second part has 2 digits, 6 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 186140-66:
(8*1)+(7*8)+(6*6)+(5*1)+(4*4)+(3*0)+(2*6)+(1*6)=139
139 % 10 = 9
So 186140-66-9 is a valid CAS Registry Number.

186140-66-9Downstream Products

186140-66-9Relevant academic research and scientific papers

Pyrazolopyridines I: Synthesis of some pyrazolo[3,4-b]pyridine-4- carboxylates

Maqbool, Tahir,Khan, Misbahul Ain,Khan, Muhammad Naeem,Elliott, Mark C.,Munawar, Munawar Ali,Nasrullah, Muhammad,Bhatti, Abdul Waheed,Nazeer, Areesha,Lin, Whei-Oh

, p. 7715 - 7718 (2013)

A series of ethyl 3-methyl-1-phenyl-6-aryl-1 H-pyrazolo[3,4-b]pyridine-4- carboxylates were prepared by the reaction of 5-amino-3-methyl-1-phenyl-1 H-pyrazole with various aromatic aldehydes and ethyl pyruvate. The structure elucidation of the prepared compounds was carried out by spectroscopic techniques (mass, IR, 1H and 13C NMR).

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