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C4H3OCHCHCHNC6H11 is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

221121-75-1

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221121-75-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 221121-75-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,2,1,1,2 and 1 respectively; the second part has 2 digits, 7 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 221121-75:
(8*2)+(7*2)+(6*1)+(5*1)+(4*2)+(3*1)+(2*7)+(1*5)=71
71 % 10 = 1
So 221121-75-1 is a valid CAS Registry Number.

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