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9H-Fluorene, 9-(3,3-diphenyl-2-propenylidene)- is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

17684-25-2

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17684-25-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 17684-25-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,7,6,8 and 4 respectively; the second part has 2 digits, 2 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 17684-25:
(7*1)+(6*7)+(5*6)+(4*8)+(3*4)+(2*2)+(1*5)=132
132 % 10 = 2
So 17684-25-2 is a valid CAS Registry Number.

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