133597-89-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 133597-89-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,3,5,9 and 7 respectively; the second part has 2 digits, 8 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 133597-89:
(8*1)+(7*3)+(6*3)+(5*5)+(4*9)+(3*7)+(2*8)+(1*9)=154
154 % 10 = 4
So 133597-89-4 is a valid CAS Registry Number.