434308-90-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 434308-90-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 4,3,4,3,0 and 8 respectively; the second part has 2 digits, 9 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 434308-90:
(8*4)+(7*3)+(6*4)+(5*3)+(4*0)+(3*8)+(2*9)+(1*0)=134
134 % 10 = 4
So 434308-90-4 is a valid CAS Registry Number.