221130-88-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 221130-88-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,2,1,1,3 and 0 respectively; the second part has 2 digits, 8 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 221130-88:
(8*2)+(7*2)+(6*1)+(5*1)+(4*3)+(3*0)+(2*8)+(1*8)=77
77 % 10 = 7
So 221130-88-7 is a valid CAS Registry Number.