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1-(p-bromophenyl)-5,7-di-t-butyl-2-(o-methoxyphenyl)-spiro<2.5>octa-1,4,7-trien-6-one is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

81734-82-9

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81734-82-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 81734-82-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,1,7,3 and 4 respectively; the second part has 2 digits, 8 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 81734-82:
(7*8)+(6*1)+(5*7)+(4*3)+(3*4)+(2*8)+(1*2)=139
139 % 10 = 9
So 81734-82-9 is a valid CAS Registry Number.

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