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5-(4-Nitro-phenylazo)-cyclopenta-1,3-diene-1,2,3,4,5-pentacarboxylic acid pentamethyl ester is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

87113-87-9

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87113-87-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 87113-87-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,7,1,1 and 3 respectively; the second part has 2 digits, 8 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 87113-87:
(7*8)+(6*7)+(5*1)+(4*1)+(3*3)+(2*8)+(1*7)=139
139 % 10 = 9
So 87113-87-9 is a valid CAS Registry Number.

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