172038-40-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 172038-40-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,7,2,0,3 and 8 respectively; the second part has 2 digits, 4 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 172038-40:
(8*1)+(7*7)+(6*2)+(5*0)+(4*3)+(3*8)+(2*4)+(1*0)=113
113 % 10 = 3
So 172038-40-3 is a valid CAS Registry Number.