7311-85-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 7311-85-5 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 7,3,1 and 1 respectively; the second part has 2 digits, 8 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 7311-85:
(6*7)+(5*3)+(4*1)+(3*1)+(2*8)+(1*5)=85
85 % 10 = 5
So 7311-85-5 is a valid CAS Registry Number.