199539-16-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 199539-16-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,9,9,5,3 and 9 respectively; the second part has 2 digits, 1 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 199539-16:
(8*1)+(7*9)+(6*9)+(5*5)+(4*3)+(3*9)+(2*1)+(1*6)=197
197 % 10 = 7
So 199539-16-7 is a valid CAS Registry Number.