19754-56-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 19754-56-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,9,7,5 and 4 respectively; the second part has 2 digits, 5 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 19754-56:
(7*1)+(6*9)+(5*7)+(4*5)+(3*4)+(2*5)+(1*6)=144
144 % 10 = 4
So 19754-56-4 is a valid CAS Registry Number.