93900-31-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 93900-31-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,3,9,0 and 0 respectively; the second part has 2 digits, 3 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 93900-31:
(7*9)+(6*3)+(5*9)+(4*0)+(3*0)+(2*3)+(1*1)=133
133 % 10 = 3
So 93900-31-3 is a valid CAS Registry Number.