83911-57-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 83911-57-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,3,9,1 and 1 respectively; the second part has 2 digits, 5 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 83911-57:
(7*8)+(6*3)+(5*9)+(4*1)+(3*1)+(2*5)+(1*7)=143
143 % 10 = 3
So 83911-57-3 is a valid CAS Registry Number.