5540-55-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 5540-55-6 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 5,5,4 and 0 respectively; the second part has 2 digits, 5 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 5540-55:
(6*5)+(5*5)+(4*4)+(3*0)+(2*5)+(1*5)=86
86 % 10 = 6
So 5540-55-6 is a valid CAS Registry Number.