639078-89-0 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 639078-89-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,3,9,0,7 and 8 respectively; the second part has 2 digits, 8 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 639078-89:
(8*6)+(7*3)+(6*9)+(5*0)+(4*7)+(3*8)+(2*8)+(1*9)=200
200 % 10 = 0
So 639078-89-0 is a valid CAS Registry Number.