221087-79-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 221087-79-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,2,1,0,8 and 7 respectively; the second part has 2 digits, 7 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 221087-79:
(8*2)+(7*2)+(6*1)+(5*0)+(4*8)+(3*7)+(2*7)+(1*9)=112
112 % 10 = 2
So 221087-79-2 is a valid CAS Registry Number.