4127-89-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 4127-89-3 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 4,1,2 and 7 respectively; the second part has 2 digits, 8 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 4127-89:
(6*4)+(5*1)+(4*2)+(3*7)+(2*8)+(1*9)=83
83 % 10 = 3
So 4127-89-3 is a valid CAS Registry Number.