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131887-73-5

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131887-73-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 131887-73-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,1,8,8 and 7 respectively; the second part has 2 digits, 7 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 131887-73:
(8*1)+(7*3)+(6*1)+(5*8)+(4*8)+(3*7)+(2*7)+(1*3)=145
145 % 10 = 5
So 131887-73-5 is a valid CAS Registry Number.

131887-73-5Relevant articles and documents

NTCP INHIBITORS

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Paragraph 0382-0384, (2019/11/04)

Provided are cyclosporin A analogues that are NTCP inhibitors and useful for treating HBV and/or HDV infection (s), hepatoprotection and amelioration of hypercholesterolemia, diabetes and inhibiting cancer.

Synthesis and Biological Activity of trans-(+/-)-N-Methyl-2-(3-pirydyl)-2-tetrahydrothiopyrancarbothioamide 1-Oxide (RP 49356) and Analogues: A New Class of Potassium Channel Opener

Brown, Thomas J.,Chapman, Robert F.,Cook, David C.,Hart, Terance W.,McLay, Iain M.,et al.

, p. 3613 - 3624 (2007/10/02)

The synthesis and biological activity of trans-(+/-)-N-methyl-2-(3-pyridyl)-2-tetrahydrothiopyrancarbothioamide 1-oxide (8a, RP 49356) and analoques is reported.These compounds constitute a new structural class of K+-channel opener.The effects of changes in the pyridyl group, thioamide, and thiane ring on in vitro K+-channel opening activity are discussed.A 3-pyridyl or 3-quinolyl group, a small N-alkyl thioamide function, and a thiane oxide ring, in which the sulfoxide is in a trans relationship to thioamide, are preferred for activity.Selected compounds were tested intravenously in the normotensive anaesthetized rat for hypotensive effects, and the activities reflect their in vitro K+-channel opening activity.This led to further evaluation of compound 8a and the selection of the (-)-enantiomer 8b (RP 52891) for development as an antihypertensive and antianginal agent.

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