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124341-05-5

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124341-05-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 124341-05-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,4,3,4 and 1 respectively; the second part has 2 digits, 0 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 124341-05:
(8*1)+(7*2)+(6*4)+(5*3)+(4*4)+(3*1)+(2*0)+(1*5)=85
85 % 10 = 5
So 124341-05-5 is a valid CAS Registry Number.

124341-05-5Relevant articles and documents

Synthesis Method for Candesartan Cilexetil Intermediate

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, (2022/03/31)

A synthesis method for a candesartan cilexetil intermediate represented by formula (II) is provided. The method includes (1) dissolving a compound represented by formula (IV) to an aprotic solvent to obtain a first mixed solution, and dissolving a phase transfer catalyst and an azidation reagent to water to obtain a second mixed solution; (2) dropping the first mixed solution to the second mixed solution for azidation reaction, and after the reaction is ended, standing and layering same to obtain an organic phase containing a compound represented by formula (V); (3) dropping the obtained organic phase containing the compound represented by formula (V) to tertiary butyl alcohol for rearrangement reaction, and after the reaction is ended, concentrating same to obtain a solid or oily material, then adding a crystallizing solvent to the obtained solid or oily material for recrystallization, and separating same to obtain a crystal.

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