83807-42-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 83807-42-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,3,8,0 and 7 respectively; the second part has 2 digits, 4 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 83807-42:
(7*8)+(6*3)+(5*8)+(4*0)+(3*7)+(2*4)+(1*2)=145
145 % 10 = 5
So 83807-42-5 is a valid CAS Registry Number.