22218-87-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 22218-87-7 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, 8 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 22218-87:
(7*2)+(6*2)+(5*2)+(4*1)+(3*8)+(2*8)+(1*7)=87
87 % 10 = 7
So 22218-87-7 is a valid CAS Registry Number.