639476-17-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 639476-17-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,3,9,4,7 and 6 respectively; the second part has 2 digits, 1 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 639476-17:
(8*6)+(7*3)+(6*9)+(5*4)+(4*7)+(3*6)+(2*1)+(1*7)=198
198 % 10 = 8
So 639476-17-8 is a valid CAS Registry Number.