163594-20-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 163594-20-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,6,3,5,9 and 4 respectively; the second part has 2 digits, 2 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 163594-20:
(8*1)+(7*6)+(6*3)+(5*5)+(4*9)+(3*4)+(2*2)+(1*0)=145
145 % 10 = 5
So 163594-20-5 is a valid CAS Registry Number.