78443-17-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 78443-17-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,8,4,4 and 3 respectively; the second part has 2 digits, 1 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 78443-17:
(7*7)+(6*8)+(5*4)+(4*4)+(3*3)+(2*1)+(1*7)=151
151 % 10 = 1
So 78443-17-1 is a valid CAS Registry Number.