18261-53-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 18261-53-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,8,2,6 and 1 respectively; the second part has 2 digits, 5 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 18261-53:
(7*1)+(6*8)+(5*2)+(4*6)+(3*1)+(2*5)+(1*3)=105
105 % 10 = 5
So 18261-53-5 is a valid CAS Registry Number.