81569-54-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 81569-54-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,1,5,6 and 9 respectively; the second part has 2 digits, 5 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 81569-54:
(7*8)+(6*1)+(5*5)+(4*6)+(3*9)+(2*5)+(1*4)=152
152 % 10 = 2
So 81569-54-2 is a valid CAS Registry Number.