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7-(4-Bromo-phenylazo)-3,4,6-triphenyl-1,2,5,8a,9-pentaaza-fluoren-8-ol is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

136271-40-4

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136271-40-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 136271-40-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,6,2,7 and 1 respectively; the second part has 2 digits, 4 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 136271-40:
(8*1)+(7*3)+(6*6)+(5*2)+(4*7)+(3*1)+(2*4)+(1*0)=114
114 % 10 = 4
So 136271-40-4 is a valid CAS Registry Number.

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