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1420476-84-1

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1420476-84-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1420476-84-1 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,4,2,0,4,7 and 6 respectively; the second part has 2 digits, 8 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 1420476-84:
(9*1)+(8*4)+(7*2)+(6*0)+(5*4)+(4*7)+(3*6)+(2*8)+(1*4)=141
141 % 10 = 1
So 1420476-84-1 is a valid CAS Registry Number.

1420476-84-1Downstream Products

1420476-84-1Relevant articles and documents

Synthesis of pyridopyrazine-1,6-diones from 6-hydroxypicolinic acids via a one-pot coupling/cyclization reaction

Tran, Tuan P.,Mullins, Patrick B.,Am Ende, Christopher W.,Pettersson, Martin

supporting information, p. 642 - 645 (2013/04/10)

A facile one-pot synthesis of 3,4-dihydro-1H-pyrido[1,2-a]pyrazine-1,6(2H)- diones (pyridopyrazine-1,6-diones) has been developed which employs a sequential coupling/cyclization reaction of 6-hydroxypicolinic acids and β-hydroxylamines. The transformation proceeds in good yield under mild conditions using O-(7-aza-1H-benzotriazole-1-yl)-1,1,3,3-tetramethyluronium hexafluorophosphate (HATU) to both carry out the amide formation and activate the hydroxyl group for intramolecular alkylation.

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