311803-75-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 311803-75-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 3,1,1,8,0 and 3 respectively; the second part has 2 digits, 7 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 311803-75:
(8*3)+(7*1)+(6*1)+(5*8)+(4*0)+(3*3)+(2*7)+(1*5)=105
105 % 10 = 5
So 311803-75-5 is a valid CAS Registry Number.