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71054-83-6

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71054-83-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 71054-83-6 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,1,0,5 and 4 respectively; the second part has 2 digits, 8 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 71054-83:
(7*7)+(6*1)+(5*0)+(4*5)+(3*4)+(2*8)+(1*3)=106
106 % 10 = 6
So 71054-83-6 is a valid CAS Registry Number.

71054-83-6Relevant articles and documents

Synthesis and reactions of 4,5-dihydro-4-oxo-pyrano [3,2-b]indole-3-carbaldehydes

Gorlitzer,Michels

, p. 106 - 115 (2007/10/02)

The title substances 3 are accessible following two reaction pathes, beginning with the 1,3-dicarbonyl compounds I. The 2-amino-3-carbaldehydes 15 are synthesized from the oximes II. The reaction of 3 with β-amino crotonic esters yields a mixture of the 1

Process for the preparation of indolopyrones

-

, (2008/06/13)

This invention relates to a novel process for preparing a group of novel substituted indolopyrones.

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