19747-78-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 19747-78-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,9,7,4 and 7 respectively; the second part has 2 digits, 7 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 19747-78:
(7*1)+(6*9)+(5*7)+(4*4)+(3*7)+(2*7)+(1*8)=155
155 % 10 = 5
So 19747-78-5 is a valid CAS Registry Number.