221235-34-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 221235-34-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,2,1,2,3 and 5 respectively; the second part has 2 digits, 3 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 221235-34:
(8*2)+(7*2)+(6*1)+(5*2)+(4*3)+(3*5)+(2*3)+(1*4)=83
83 % 10 = 3
So 221235-34-3 is a valid CAS Registry Number.