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27471-36-9

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27471-36-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 27471-36-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,7,4,7 and 1 respectively; the second part has 2 digits, 3 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 27471-36:
(7*2)+(6*7)+(5*4)+(4*7)+(3*1)+(2*3)+(1*6)=119
119 % 10 = 9
So 27471-36-9 is a valid CAS Registry Number.

27471-36-9Relevant articles and documents

Preparation method of apixaban and intermediate thereof

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Paragraph 0112-0116, (2019/08/06)

The invention relates to a preparation method of apixaban (an antithrombotic drug) and a related intermediate, The preparation method comprises the specific steps as follows: carrying out amidation-cyclization integrated reaction on p-nitroaniline, which

New synthetic routes for N-substituted 1,n-diamines. II. Synthesis of selectively N-substituted tetra- and pentamethylenediamines from ω-alkanoic acid derivatives

Ramírez, María A.,Corona, María V.,Ortiz, Gisela,Salerno, Alejandra,Perillo, Isabel A.,Blanco, María M.

supporting information; experimental part, p. 1466 - 1468 (2011/06/10)

A new approach for the synthesis of selectively N-substituted tetra- and pentamethylenediamines 1 (n = 4,5) is described. The method uses N-substituted ω-haloalkanamides 2 as precursors and involves the microwave-promoted conversion into ω-azidocarboxamides 3 and later the reduction of both azido and carboxamide groups with diborane.

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