22657-01-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 22657-01-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,2,6,5 and 7 respectively; the second part has 2 digits, 0 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 22657-01:
(7*2)+(6*2)+(5*6)+(4*5)+(3*7)+(2*0)+(1*1)=98
98 % 10 = 8
So 22657-01-8 is a valid CAS Registry Number.