55841-23-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 55841-23-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,5,8,4 and 1 respectively; the second part has 2 digits, 2 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 55841-23:
(7*5)+(6*5)+(5*8)+(4*4)+(3*1)+(2*2)+(1*3)=131
131 % 10 = 1
So 55841-23-1 is a valid CAS Registry Number.