4709-55-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 4709-55-1 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 4,7,0 and 9 respectively; the second part has 2 digits, 5 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 4709-55:
(6*4)+(5*7)+(4*0)+(3*9)+(2*5)+(1*5)=101
101 % 10 = 1
So 4709-55-1 is a valid CAS Registry Number.