6555-63-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 6555-63-1 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 6,5,5 and 5 respectively; the second part has 2 digits, 6 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 6555-63:
(6*6)+(5*5)+(4*5)+(3*5)+(2*6)+(1*3)=111
111 % 10 = 1
So 6555-63-1 is a valid CAS Registry Number.