439902-03-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 439902-03-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 4,3,9,9,0 and 2 respectively; the second part has 2 digits, 0 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 439902-03:
(8*4)+(7*3)+(6*9)+(5*9)+(4*0)+(3*2)+(2*0)+(1*3)=161
161 % 10 = 1
So 439902-03-1 is a valid CAS Registry Number.