34219-91-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 34219-91-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 3,4,2,1 and 9 respectively; the second part has 2 digits, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 34219-91:
(7*3)+(6*4)+(5*2)+(4*1)+(3*9)+(2*9)+(1*1)=105
105 % 10 = 5
So 34219-91-5 is a valid CAS Registry Number.