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9H-Fluorene, 4-bromo-2,7-bis(1,1-dimethylethyl)- is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

91611-97-1

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91611-97-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 91611-97-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,1,6,1 and 1 respectively; the second part has 2 digits, 9 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 91611-97:
(7*9)+(6*1)+(5*6)+(4*1)+(3*1)+(2*9)+(1*7)=131
131 % 10 = 1
So 91611-97-1 is a valid CAS Registry Number.

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