239807-61-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 239807-61-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,3,9,8,0 and 7 respectively; the second part has 2 digits, 6 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 239807-61:
(8*2)+(7*3)+(6*9)+(5*8)+(4*0)+(3*7)+(2*6)+(1*1)=165
165 % 10 = 5
So 239807-61-5 is a valid CAS Registry Number.