857957-80-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 857957-80-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 8,5,7,9,5 and 7 respectively; the second part has 2 digits, 8 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 857957-80:
(8*8)+(7*5)+(6*7)+(5*9)+(4*5)+(3*7)+(2*8)+(1*0)=243
243 % 10 = 3
So 857957-80-3 is a valid CAS Registry Number.