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tributyl(2-thienylethynyl)stannane is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

197957-74-7

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197957-74-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 197957-74-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,9,7,9,5 and 7 respectively; the second part has 2 digits, 7 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 197957-74:
(8*1)+(7*9)+(6*7)+(5*9)+(4*5)+(3*7)+(2*7)+(1*4)=217
217 % 10 = 7
So 197957-74-7 is a valid CAS Registry Number.

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