344328-90-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 344328-90-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 3,4,4,3,2 and 8 respectively; the second part has 2 digits, 9 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 344328-90:
(8*3)+(7*4)+(6*4)+(5*3)+(4*2)+(3*8)+(2*9)+(1*0)=141
141 % 10 = 1
So 344328-90-1 is a valid CAS Registry Number.