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889471-78-7

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889471-78-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 889471-78-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 8,8,9,4,7 and 1 respectively; the second part has 2 digits, 7 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 889471-78:
(8*8)+(7*8)+(6*9)+(5*4)+(4*7)+(3*1)+(2*7)+(1*8)=247
247 % 10 = 7
So 889471-78-7 is a valid CAS Registry Number.

889471-78-7Relevant articles and documents

SYNTHESIS OF CATECHIN AND EPICATECHIN CONJUGATES

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Page/Page column 12-13, (2013/03/26)

The present invention relates generally to catechin and epicatechin conjugates of formula (I). For example, a chemical synthesis process for the preparation of catechin and epi-catechin compounds, in particular of catechin and epi-catechin conjugates is disclosed. A further aspect of the invention pertains to new catechin and epi-catechin conjugate compounds.

Epicatechin B-ring conjugates: First enantioselective synthesis and evidence for their occurrence in human biological fluids

Romanov-Michailidis, Fedor,Viton, Florian,Fumeaux, René,Lévèques, Antoine,Actis-Goretta, Lucas,Rein, Maarit,Williamson, Gary,Barron, Denis

, p. 3902 - 3905 (2012/09/22)

Herein, the first enantioselective total synthesis of a number of biologically relevant (-)-epicatechin conjugates is described. The success of this synthesis relied on (i) optimized conditions for the stereospecific cyclization step leading to the catechin C ring; on (ii) efficient conjugation reactions; and on (iii) optimized deprotection sequences. These standard compounds have been subsequently used to elucidate for the first time the pattern of (-)-epicatechin conjugates present in four different human biological fluids following (-)-epicatechin absorption.

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