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C4H9(1+)*CH3Cl is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

81971-25-7

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81971-25-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 81971-25-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,1,9,7 and 1 respectively; the second part has 2 digits, 2 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 81971-25:
(7*8)+(6*1)+(5*9)+(4*7)+(3*1)+(2*2)+(1*5)=147
147 % 10 = 7
So 81971-25-7 is a valid CAS Registry Number.

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