23711-19-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 23711-19-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,3,7,1 and 1 respectively; the second part has 2 digits, 1 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 23711-19:
(7*2)+(6*3)+(5*7)+(4*1)+(3*1)+(2*1)+(1*9)=85
85 % 10 = 5
So 23711-19-5 is a valid CAS Registry Number.