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O,O'-Bis-<4-(4-nitrophenylazo)-benzoyl>-sirenin is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

21764-26-1

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21764-26-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 21764-26-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,1,7,6 and 4 respectively; the second part has 2 digits, 2 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 21764-26:
(7*2)+(6*1)+(5*7)+(4*6)+(3*4)+(2*2)+(1*6)=101
101 % 10 = 1
So 21764-26-1 is a valid CAS Registry Number.

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