3128-75-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 3128-75-4 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 3,1,2 and 8 respectively; the second part has 2 digits, 7 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 3128-75:
(6*3)+(5*1)+(4*2)+(3*8)+(2*7)+(1*5)=74
74 % 10 = 4
So 3128-75-4 is a valid CAS Registry Number.