22218-77-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 22218-77-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,2,2,1 and 8 respectively; the second part has 2 digits, 7 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 22218-77:
(7*2)+(6*2)+(5*2)+(4*1)+(3*8)+(2*7)+(1*7)=85
85 % 10 = 5
So 22218-77-5 is a valid CAS Registry Number.