199856-16-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 199856-16-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,9,9,8,5 and 6 respectively; the second part has 2 digits, 1 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 199856-16:
(8*1)+(7*9)+(6*9)+(5*8)+(4*5)+(3*6)+(2*1)+(1*6)=211
211 % 10 = 1
So 199856-16-1 is a valid CAS Registry Number.