199457-69-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 199457-69-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,9,9,4,5 and 7 respectively; the second part has 2 digits, 6 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 199457-69:
(8*1)+(7*9)+(6*9)+(5*4)+(4*5)+(3*7)+(2*6)+(1*9)=207
207 % 10 = 7
So 199457-69-7 is a valid CAS Registry Number.