4189-03-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 4189-03-1 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 4,1,8 and 9 respectively; the second part has 2 digits, 0 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 4189-03:
(6*4)+(5*1)+(4*8)+(3*9)+(2*0)+(1*3)=91
91 % 10 = 1
So 4189-03-1 is a valid CAS Registry Number.