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3380-53-8

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3380-53-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 3380-53-8 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 3,3,8 and 0 respectively; the second part has 2 digits, 5 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 3380-53:
(6*3)+(5*3)+(4*8)+(3*0)+(2*5)+(1*3)=78
78 % 10 = 8
So 3380-53-8 is a valid CAS Registry Number.

3380-53-8Relevant articles and documents

Method for preparing diclosan through Baeyer-Villiger oxidation

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Paragraph 0010; 0032; 0010; 0037-0051, (2021/07/01)

The invention provides a method for preparing diclosan by using urea peroxide as an oxidizing agent. Particularly, the method comprises the following steps: (1) oxidizing 5-chloro-2-(4-chloro-phenoxy)-acetophenone in an inert solvent by using urea peroxide as an oxidizing agent to obtain an intermediate I; and (2) hydrolyzing the intermediate I to obtain the diclosan. The method is safe in production process, mild in reaction and suitable for industrial production.

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