283157-25-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 283157-25-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,8,3,1,5 and 7 respectively; the second part has 2 digits, 2 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 283157-25:
(8*2)+(7*8)+(6*3)+(5*1)+(4*5)+(3*7)+(2*2)+(1*5)=145
145 % 10 = 5
So 283157-25-5 is a valid CAS Registry Number.