5556-40-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 5556-40-1 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 5,5,5 and 6 respectively; the second part has 2 digits, 4 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 5556-40:
(6*5)+(5*5)+(4*5)+(3*6)+(2*4)+(1*0)=101
101 % 10 = 1
So 5556-40-1 is a valid CAS Registry Number.