199122-50-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 199122-50-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,9,9,1,2 and 2 respectively; the second part has 2 digits, 5 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 199122-50:
(8*1)+(7*9)+(6*9)+(5*1)+(4*2)+(3*2)+(2*5)+(1*0)=154
154 % 10 = 4
So 199122-50-4 is a valid CAS Registry Number.