199620-18-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 199620-18-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,9,9,6,2 and 0 respectively; the second part has 2 digits, 1 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 199620-18:
(8*1)+(7*9)+(6*9)+(5*6)+(4*2)+(3*0)+(2*1)+(1*8)=173
173 % 10 = 3
So 199620-18-3 is a valid CAS Registry Number.