77903-22-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 77903-22-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,7,9,0 and 3 respectively; the second part has 2 digits, 2 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 77903-22:
(7*7)+(6*7)+(5*9)+(4*0)+(3*3)+(2*2)+(1*2)=151
151 % 10 = 1
So 77903-22-1 is a valid CAS Registry Number.