55704-91-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 55704-91-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,5,7,0 and 4 respectively; the second part has 2 digits, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 55704-91:
(7*5)+(6*5)+(5*7)+(4*0)+(3*4)+(2*9)+(1*1)=131
131 % 10 = 1
So 55704-91-1 is a valid CAS Registry Number.