222159-99-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 222159-99-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,2,2,1,5 and 9 respectively; the second part has 2 digits, 9 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 222159-99:
(8*2)+(7*2)+(6*2)+(5*1)+(4*5)+(3*9)+(2*9)+(1*9)=121
121 % 10 = 1
So 222159-99-1 is a valid CAS Registry Number.