172984-81-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 172984-81-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,7,2,9,8 and 4 respectively; the second part has 2 digits, 8 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 172984-81:
(8*1)+(7*7)+(6*2)+(5*9)+(4*8)+(3*4)+(2*8)+(1*1)=175
175 % 10 = 5
So 172984-81-5 is a valid CAS Registry Number.