993-51-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 993-51-1 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 9,9 and 3 respectively; the second part has 2 digits, 5 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 993-51:
(5*9)+(4*9)+(3*3)+(2*5)+(1*1)=101
101 % 10 = 1
So 993-51-1 is a valid CAS Registry Number.