211918-28-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 211918-28-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,1,1,9,1 and 8 respectively; the second part has 2 digits, 2 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 211918-28:
(8*2)+(7*1)+(6*1)+(5*9)+(4*1)+(3*8)+(2*2)+(1*8)=114
114 % 10 = 4
So 211918-28-4 is a valid CAS Registry Number.