91909-52-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 91909-52-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,1,9,0 and 9 respectively; the second part has 2 digits, 5 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 91909-52:
(7*9)+(6*1)+(5*9)+(4*0)+(3*9)+(2*5)+(1*2)=153
153 % 10 = 3
So 91909-52-3 is a valid CAS Registry Number.