209394-87-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 209394-87-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,0,9,3,9 and 4 respectively; the second part has 2 digits, 8 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 209394-87:
(8*2)+(7*0)+(6*9)+(5*3)+(4*9)+(3*4)+(2*8)+(1*7)=156
156 % 10 = 6
So 209394-87-6 is a valid CAS Registry Number.