19521-84-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 19521-84-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,9,5,2 and 1 respectively; the second part has 2 digits, 8 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 19521-84:
(7*1)+(6*9)+(5*5)+(4*2)+(3*1)+(2*8)+(1*4)=117
117 % 10 = 7
So 19521-84-7 is a valid CAS Registry Number.