69931-93-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 69931-93-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,9,9,3 and 1 respectively; the second part has 2 digits, 9 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 69931-93:
(7*6)+(6*9)+(5*9)+(4*3)+(3*1)+(2*9)+(1*3)=177
177 % 10 = 7
So 69931-93-7 is a valid CAS Registry Number.