91801-53-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 91801-53-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,1,8,0 and 1 respectively; the second part has 2 digits, 5 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 91801-53:
(7*9)+(6*1)+(5*8)+(4*0)+(3*1)+(2*5)+(1*3)=125
125 % 10 = 5
So 91801-53-5 is a valid CAS Registry Number.