19620-55-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 19620-55-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,9,6,2 and 0 respectively; the second part has 2 digits, 5 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 19620-55:
(7*1)+(6*9)+(5*6)+(4*2)+(3*0)+(2*5)+(1*5)=114
114 % 10 = 4
So 19620-55-4 is a valid CAS Registry Number.