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1403991-82-1

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1403991-82-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1403991-82-1 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,4,0,3,9,9 and 1 respectively; the second part has 2 digits, 8 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 1403991-82:
(9*1)+(8*4)+(7*0)+(6*3)+(5*9)+(4*9)+(3*1)+(2*8)+(1*2)=161
161 % 10 = 1
So 1403991-82-1 is a valid CAS Registry Number.

1403991-82-1Relevant articles and documents

An Improved Process for the Enantioselective Synthesis of HCV NS5A Inhibitor Elbasvir (MK-8742) Chiral Amine Intermediate

Chapala, Vijaya Lakshmi,Katari, Naresh Kumar,Kerru, Nagaraju,Malavattu, Giri Prasad,Marisetti, Vishnu Murthy,Reddy, Pedavenkatagari Narayana

, p. 932 - 938 (2021/06/26)

Abstract: Large-scale enantioselective synthesis of the chiral amine unit of HCV NS5A inhibitor Elbasvir has been accomplished in six steps, with 55% overall yield. The process includes a highly enantioselective reduction of the NH imine using R-(+)-diphe

Hepatitis C virus inhibitor and application thereof

-

Paragraph 0239-0244, (2018/01/13)

The invention relates to a hepatitis C virus inhibitor and application thereof, and particularly discloses a compound which can be used as a hepatitis C virus and is as shown in a formula (I), or optical isomer, pharmaceutically acceptable salt, hydrate or solvate thereof, which can be used for treating hepatitis C virus (HCV) infection or hepatitis C diseases, or used as a hepatitis C virus nonstructural 5A (NS5A) protein inhibitor.

Enantioselective synthesis of an HCV NS5a antagonist

Mangion, Ian K.,Chen, Cheng-Yi,Li, Hongmei,Maligres, Peter,Chen, Yonggang,Christensen, Melodie,Cohen, Ryan,Jeon, Ingyu,Klapars, Artis,Krska, Shane,Nguyen, Hoa,Reamer, Robert A.,Sherry, Benjamin D.,Zavialov, Ilia

supporting information, p. 2310 - 2313 (2014/05/20)

A concise, enantioselective synthesis of the HCV NS5a inhibitor MK-8742 (1) is reported. The features of the synthesis include a highly enantioselective transfer hydrogenation of an NH imine and a dynamic diastereoselective transformation. The synthesis of this complex target requires simple starting materials and nine linear steps for completion.

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