390809-55-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 390809-55-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 3,9,0,8,0 and 9 respectively; the second part has 2 digits, 5 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 390809-55:
(8*3)+(7*9)+(6*0)+(5*8)+(4*0)+(3*9)+(2*5)+(1*5)=169
169 % 10 = 9
So 390809-55-9 is a valid CAS Registry Number.