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1254062-68-4

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1254062-68-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1254062-68-4 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,5,4,0,6 and 2 respectively; the second part has 2 digits, 6 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 1254062-68:
(9*1)+(8*2)+(7*5)+(6*4)+(5*0)+(4*6)+(3*2)+(2*6)+(1*8)=134
134 % 10 = 4
So 1254062-68-4 is a valid CAS Registry Number.

1254062-68-4Relevant articles and documents

A method for preparing color Switzerland for Nepal

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Paragraph 0033; 0034, (2017/08/25)

The invention discloses a method for preparing ceritinib, belonging to the field of chemical pharmacy. The method comprises the following steps: by taking 3-bromine-4-methylphenol as an initial raw material, performing phenolic hydroxyl isopropylation, nitration, coupling and reduction reaction, obtaining a midbody 1, by further taking o-nitro fluorobenzene as another initial raw material, performing isosulfhydrylation, oxidation, reduction and pyrimidine, obtaining a midbody 2, performing coupling reduction on the midbody 1 and the midbody 1, obtaining ceritinib which is protected by BOC acid anhydride, and finally removing a t-butyloxycarboryl protecting group, and obtaining ceritinib. The method is simple and feasible to operate, relatively high in yield, small in pollution and applicable to industrial production.

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