1138443-28-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1138443-28-3 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,1,3,8,4,4 and 3 respectively; the second part has 2 digits, 2 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 1138443-28:
(9*1)+(8*1)+(7*3)+(6*8)+(5*4)+(4*4)+(3*3)+(2*2)+(1*8)=143
143 % 10 = 3
So 1138443-28-3 is a valid CAS Registry Number.