221183-92-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 221183-92-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,2,1,1,8 and 3 respectively; the second part has 2 digits, 9 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 221183-92:
(8*2)+(7*2)+(6*1)+(5*1)+(4*8)+(3*3)+(2*9)+(1*2)=102
102 % 10 = 2
So 221183-92-2 is a valid CAS Registry Number.