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(5-chloro-2-nitro-phenyl)-phenyl-diazene is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

91331-40-7

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91331-40-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 91331-40-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,1,3,3 and 1 respectively; the second part has 2 digits, 4 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 91331-40:
(7*9)+(6*1)+(5*3)+(4*3)+(3*1)+(2*4)+(1*0)=107
107 % 10 = 7
So 91331-40-7 is a valid CAS Registry Number.

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