13669-93-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 13669-93-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,3,6,6 and 9 respectively; the second part has 2 digits, 9 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 13669-93:
(7*1)+(6*3)+(5*6)+(4*6)+(3*9)+(2*9)+(1*3)=127
127 % 10 = 7
So 13669-93-7 is a valid CAS Registry Number.