158309-34-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 158309-34-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,5,8,3,0 and 9 respectively; the second part has 2 digits, 3 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 158309-34:
(8*1)+(7*5)+(6*8)+(5*3)+(4*0)+(3*9)+(2*3)+(1*4)=143
143 % 10 = 3
So 158309-34-3 is a valid CAS Registry Number.