25654-39-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 25654-39-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,5,6,5 and 4 respectively; the second part has 2 digits, 3 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 25654-39:
(7*2)+(6*5)+(5*6)+(4*5)+(3*4)+(2*3)+(1*9)=121
121 % 10 = 1
So 25654-39-1 is a valid CAS Registry Number.