83957-93-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 83957-93-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,3,9,5 and 7 respectively; the second part has 2 digits, 9 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 83957-93:
(7*8)+(6*3)+(5*9)+(4*5)+(3*7)+(2*9)+(1*3)=181
181 % 10 = 1
So 83957-93-1 is a valid CAS Registry Number.