288311-05-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 288311-05-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,8,8,3,1 and 1 respectively; the second part has 2 digits, 0 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 288311-05:
(8*2)+(7*8)+(6*8)+(5*3)+(4*1)+(3*1)+(2*0)+(1*5)=147
147 % 10 = 7
So 288311-05-7 is a valid CAS Registry Number.