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2,5-Difluoro-1,4-benzosemichinon is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

22666-13-3

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22666-13-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 22666-13-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,2,6,6 and 6 respectively; the second part has 2 digits, 1 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 22666-13:
(7*2)+(6*2)+(5*6)+(4*6)+(3*6)+(2*1)+(1*3)=103
103 % 10 = 3
So 22666-13-3 is a valid CAS Registry Number.

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