109451-83-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 109451-83-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,0,9,4,5 and 1 respectively; the second part has 2 digits, 8 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 109451-83:
(8*1)+(7*0)+(6*9)+(5*4)+(4*5)+(3*1)+(2*8)+(1*3)=124
124 % 10 = 4
So 109451-83-4 is a valid CAS Registry Number.