18727-28-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 18727-28-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,8,7,2 and 7 respectively; the second part has 2 digits, 2 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 18727-28:
(7*1)+(6*8)+(5*7)+(4*2)+(3*7)+(2*2)+(1*8)=131
131 % 10 = 1
So 18727-28-1 is a valid CAS Registry Number.