Cas 904701-77-5,C20H18N2O2

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Check Digit Verification of cas no

The CAS Registry Mumber 904701-77-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 9,0,4,7,0 and 1 respectively; the second part has 2 digits, 7 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 904701-77:
(8*9)+(7*0)+(6*4)+(5*7)+(4*0)+(3*1)+(2*7)+(1*7)=155
155 % 10 = 5
So 904701-77-5 is a valid CAS Registry Number.

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904701-77-5Relevant academic research and scientific papers

Synthesis of spiro-pyridopyridine analogues by Grubbs' catalyst mediated alkene and enyne metathesis reaction

Majumdar,Islam,Rahaman,Roy

, p. 2393 - 2398 (2008/02/13)

A practical synthesis of spiro-naphthyridinone derivatives is described by the combination of the Claisen rearrangement and ring-closing metathesis/ring-closing enyne metathesis process. The RCM or RCEM proceeded smoothly in the presence of Grubbs' first

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