23178-16-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 23178-16-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,3,1,7 and 8 respectively; the second part has 2 digits, 1 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 23178-16:
(7*2)+(6*3)+(5*1)+(4*7)+(3*8)+(2*1)+(1*6)=97
97 % 10 = 7
So 23178-16-7 is a valid CAS Registry Number.