55197-15-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 55197-15-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,5,1,9 and 7 respectively; the second part has 2 digits, 1 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 55197-15:
(7*5)+(6*5)+(5*1)+(4*9)+(3*7)+(2*1)+(1*5)=134
134 % 10 = 4
So 55197-15-4 is a valid CAS Registry Number.