16917-83-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 16917-83-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,6,9,1 and 7 respectively; the second part has 2 digits, 8 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 16917-83:
(7*1)+(6*6)+(5*9)+(4*1)+(3*7)+(2*8)+(1*3)=132
132 % 10 = 2
So 16917-83-2 is a valid CAS Registry Number.