19684-34-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 19684-34-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,9,6,8 and 4 respectively; the second part has 2 digits, 3 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 19684-34:
(7*1)+(6*9)+(5*6)+(4*8)+(3*4)+(2*3)+(1*4)=145
145 % 10 = 5
So 19684-34-5 is a valid CAS Registry Number.