222191-74-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 222191-74-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,2,2,1,9 and 1 respectively; the second part has 2 digits, 7 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 222191-74:
(8*2)+(7*2)+(6*2)+(5*1)+(4*9)+(3*1)+(2*7)+(1*4)=104
104 % 10 = 4
So 222191-74-4 is a valid CAS Registry Number.