74920-83-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 74920-83-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,4,9,2 and 0 respectively; the second part has 2 digits, 8 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 74920-83:
(7*7)+(6*4)+(5*9)+(4*2)+(3*0)+(2*8)+(1*3)=145
145 % 10 = 5
So 74920-83-5 is a valid CAS Registry Number.