79909-56-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 79909-56-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,9,9,0 and 9 respectively; the second part has 2 digits, 5 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 79909-56:
(7*7)+(6*9)+(5*9)+(4*0)+(3*9)+(2*5)+(1*6)=191
191 % 10 = 1
So 79909-56-1 is a valid CAS Registry Number.