2117-19-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 2117-19-3 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 2,1,1 and 7 respectively; the second part has 2 digits, 1 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 2117-19:
(6*2)+(5*1)+(4*1)+(3*7)+(2*1)+(1*9)=53
53 % 10 = 3
So 2117-19-3 is a valid CAS Registry Number.