22158-22-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 22158-22-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,2,1,5 and 8 respectively; the second part has 2 digits, 2 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 22158-22:
(7*2)+(6*2)+(5*1)+(4*5)+(3*8)+(2*2)+(1*2)=81
81 % 10 = 1
So 22158-22-1 is a valid CAS Registry Number.