215161-22-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 215161-22-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,1,5,1,6 and 1 respectively; the second part has 2 digits, 2 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 215161-22:
(8*2)+(7*1)+(6*5)+(5*1)+(4*6)+(3*1)+(2*2)+(1*2)=91
91 % 10 = 1
So 215161-22-1 is a valid CAS Registry Number.