55217-78-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 55217-78-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,5,2,1 and 7 respectively; the second part has 2 digits, 7 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 55217-78:
(7*5)+(6*5)+(5*2)+(4*1)+(3*7)+(2*7)+(1*8)=122
122 % 10 = 2
So 55217-78-2 is a valid CAS Registry Number.