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128764-56-7

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128764-56-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 128764-56-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,8,7,6 and 4 respectively; the second part has 2 digits, 5 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 128764-56:
(8*1)+(7*2)+(6*8)+(5*7)+(4*6)+(3*4)+(2*5)+(1*6)=157
157 % 10 = 7
So 128764-56-7 is a valid CAS Registry Number.

128764-56-7Relevant articles and documents

Nonpeptide Angiotensin II Receptor Antagonists: The Discovery of a Series of N-(Biphenylylmethyl)imidazoles as Potent, Orally Active Antihypertensives

Carini, David J.,Duncia, John V.,Aldrich, Paul E.,Chiu, Andrew T.,Johnson, Alexander L.,et al.

, p. 2525 - 2547 (2007/10/02)

A new series of nonpeptide angiotensin II (AII) receptor antagonists has been prepared.These N-(biphenylylmethyl)imidazoles, e.g. 2-butyl-1--4-chloro-5-(hydroxymethyl)imidazole, differ from the previously reported N-(benzamidobenzyl)imidazoles and related compounds in that they produce a potent antihypertensive effect upon oral administration; the earlier series generally were active only when administered intravenously.It has been found that the acidic group at the 2'-position of the biphenyl is essential.Only ortho-substituted acids possess both high affinity for the AII receptor and good oral antihypertensive potency.The carboxylic acid group has been replaced with a variety of acidic isosteres, and the tetrazole ring has been found to be the most effective.The tetrazole derivative, DuP 753, is currently in development for the treatment of hypertension.

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